Upgrade spring-boot 3.2.0-M1

[jvalkeal]

Should go with snapshots as first boot milestone is not out until latter part of July.

[jvalkeal]

When trying snapshots we get:

FAILURE: Build failed with an exception.

* What went wrong:
java.util.concurrent.ExecutionException: org.gradle.api.GradleException: Failed to create Jar file /home/jvalkealahti/.gradle/caches/jars-9/e68c7e667170499f021871f6fff47fa2/spring-core-6.1.0-M1.jar.
> org.gradle.api.GradleException: Failed to create Jar file /home/jvalkealahti/.gradle/caches/jars-9/e68c7e667170499f021871f6fff47fa2/spring-core-6.1.0-M1.jar.

Also affecting boot team and there's gradle/gradle#25434