org.springframework.boot.env.EnvironmentPostProcessor is still used

[snicoll]

org.springframework.boot.env.EnvironmentPostProcessor is deprecated as of Spring Boot 4.0 but Spring Cloud bindings still use it. We're working on Spring Boot 4.2.0-M1 where this is scheduled for removal and our tests are now failing:

Calculating JVM memory based on 11610600K available memory |  
-- | --
For more information on this calculation, see https://paketo.io/docs/reference/java-reference/#memory-calculator |  
Calculated JVM Memory Configuration: -XX:MaxDirectMemorySize=10M -Xmx11227395K -XX:MaxMetaspaceSize=76004K -XX:ReservedCodeCacheSize=240M -Xss1M (Total Memory: 11610600K, Thread Count: 50, Loaded Class Count: 11005, Headroom: 0%) |  
Enabling Java Native Memory Tracking |  
Adding 121 container CA certificates to JVM truststore |  
Spring Cloud Bindings Enabled |  
Picked up JAVA_TOOL_OPTIONS: -Djava.security.properties=/layers/paketo-buildpacks_bellsoft-liberica/java-security-properties/java-security.properties -XX:+ExitOnOutOfMemoryError -XX:MaxDirectMemorySize=10M -Xmx11227395K -XX:MaxMetaspaceSize=76004K -XX:ReservedCodeCacheSize=240M -Xss1M -XX:+UnlockDiagnosticVMOptions -XX:NativeMemoryTracking=summary -XX:+PrintNMTStatistics -Dorg.springframework.cloud.bindings.boot.enable=true |  
Exception in thread "main" java.lang.reflect.InvocationTargetException |  
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) |  
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) |  
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) |  
at java.base/java.lang.reflect.Method.invoke(Unknown Source) |  
at org.springframework.boot.loader.launch.Launcher.launch(Launcher.java:106) |  
at org.springframework.boot.loader.launch.Launcher.launch(Launcher.java:64) |  
at org.springframework.boot.loader.launch.WarLauncher.main(WarLauncher.java:53) |  
Caused by: java.lang.IllegalArgumentException: Unable to instantiate factory class [org.springframework.cloud.bindings.boot.BindingFlattenedEnvironmentPostProcessor] for factory type [org.springframework.context.ApplicationListener] |  
at org.springframework.core.io.support.SpringFactoriesLoader$FailureHandler.lambda$throwing$0(SpringFactoriesLoader.java:632) |  
at org.springframework.core.io.support.SpringFactoriesLoader$FailureHandler.lambda$handleMessage$0(SpringFactoriesLoader.java:656) |  
at org.springframework.core.io.support.SpringFactoriesLoader.instantiateFactory(SpringFactoriesLoader.java:225) |  
at org.springframework.core.io.support.SpringFactoriesLoader.load(SpringFactoriesLoader.java:201) |  
at org.springframework.core.io.support.SpringFactoriesLoader.load(SpringFactoriesLoader.java:157) |  
at org.springframework.boot.SpringApplication.getSpringFactoriesInstances(SpringApplication.java:472) |  
at org.springframework.boot.SpringApplication.getSpringFactoriesInstances(SpringApplication.java:468) |  
at org.springframework.boot.SpringApplication.<init>(SpringApplication.java:282) |  
at org.springframework.boot.SpringApplication.<init>(SpringApplication.java:260) |  
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1365) |  
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1354) |  
at example.ExampleApplication.main(ExampleApplication.java:13) |  
... 7 more |  
Caused by: java.lang.NoClassDefFoundError: org/springframework/boot/env/EnvironmentPostProcessor |  
at java.base/java.lang.ClassLoader.defineClass1(Native Method) |  
at java.base/java.lang.ClassLoader.defineClass(Unknown Source) |  
at java.base/java.security.SecureClassLoader.defineClass(Unknown Source) |  
at java.base/java.net.URLClassLoader.defineClass(Unknown Source) |  
at java.base/java.net.URLClassLoader$1.run(Unknown Source) |  
at java.base/java.net.URLClassLoader$1.run(Unknown Source) |  
at java.base/java.security.AccessController.doPrivileged(Unknown Source) |  
at java.base/java.net.URLClassLoader.findClass(Unknown Source) |  
at java.base/java.lang.ClassLoader.loadClass(Unknown Source) |  
at org.springframework.boot.loader.net.protocol.jar.JarUrlClassLoader.loadClass(JarUrlClassLoader.java:97) |  
at org.springframework.boot.loader.launch.LaunchedClassLoader.loadClass(LaunchedClassLoader.java:91) |  
at java.base/java.lang.ClassLoader.loadClass(Unknown Source) |  
at java.base/java.lang.Class.forName0(Native Method) |  
at java.base/java.lang.Class.forName(Unknown Source) |  
at org.springframework.util.ClassUtils.forName(ClassUtils.java:308) |  
at org.springframework.core.io.support.SpringFactoriesLoader.instantiateFactory(SpringFactoriesLoader.java:218) |  
... 16 more |  
Caused by: java.lang.ClassNotFoundException: org.springframework.boot.env.EnvironmentPostProcessor |  
at java.base/java.net.URLClassLoader.findClass(Unknown Source) |  
at java.base/java.lang.ClassLoader.loadClass(Unknown Source) |  
at org.springframework.boot.loader.net.protocol.jar.JarUrlClassLoader.loadClass(JarUrlClassLoader.java:97) |  
at org.springframework.boot.loader.launch.LaunchedClassLoader.loadClass(LaunchedClassLoader.java:91) |  
at java.base/java.lang.ClassLoader.loadClass(Unknown Source) |  
... 32 more |