This commit applies the conventions that we documented on our wiki, see
https://github.com/spring-projects/spring-boot/wiki/GitHub-Actions.
In no particular order this:
* Use consistent single quotes for descriptions
* Order elements in a predictable order. In particular, inputs, outputs,
and environment variables are ordered alphabetically
Closes gh-42512
This commit is similar to what we had to do for Java 22-ea.
Given our actions have changed quite a bit, this commit replaces the
"java-distribution" parameter by a "java-early-access" parameter. When
set, it automatically switches the distribution to temurin as well as
applying the same handling of the Java version as in b8a6cab.
See gh-41698
