[build] Fix Java 25 builds (#8245)

I'm able to use a local install of Gradle 9.1 that has Java 25 support,
but some plugin upgrades are needed as well.

Author: calcmogul

build.gradle

@@ -18,9 +18,9 @@ plugins {
     id 'idea'
     id 'visual-studio'
     id 'net.ltgt.errorprone' version '4.3.0' apply false
-    id 'com.gradleup.shadow' version '9.0.0' apply false
-    id 'com.diffplug.spotless' version '7.2.1' apply false
-    id 'com.github.spotbugs' version '6.2.3' apply false
+    id 'com.gradleup.shadow' version '9.1.0' apply false
+    id 'com.diffplug.spotless' version '8.0.0' apply false
+    id 'com.github.spotbugs' version '6.4.2' apply false
 }
 
 wpilibVersioning.buildServerMode = project.hasProperty('buildServer')