Keep Gradle wrapper at 8.14.4 pending upstream Grails fix

Gradle 9.7 made GroovyCompileOptions a lazy Property, and Gradle now
finalizes task properties before any task action runs. GrailsGradlePlugin
assigns groovyOptions.configurationScript from a doFirst, which breaks
every Groovy compile on Gradle 9.7+:

  > The value for task ':compileGroovy' property
    'groovyOptions.configurationScriptFile' is final and cannot be
    changed any further.

Tracked upstream at apache/grails-core#16114 (still open, targets 8.0.x,
not yet released). Revert just the wrapper bump; keep the other
dependency updates from this group.

Author: sbglasius

gradle/wrapper/gradle-wrapper.jar

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-9.7.0-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.14.4-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME