Revert "Bump Gradle to 8.2"

[nastra]

Reverts #7955

With Gradle 8.2 and when running ./gradlew clean build -x test -x integrationTest, this would fail with the below error:

FAILURE: Build failed with an exception.

* What went wrong:
A problem was found with the configuration of task ':iceberg-data:revapiAnalyze' (type 'RevapiAnalyzeTask').
  - Gradle detected a problem with the following location: '/home/nastra/Development/workspace/iceberg/common/build/libs/iceberg-common-1.4.0-SNAPSHOT.jar'.
    
    Reason: Task ':iceberg-data:revapiAnalyze' uses this output of task ':iceberg-common:jar' without declaring an explicit or implicit dependency. This can lead to incorrect results being produced, depending on what order the tasks are executed.
    
    Possible solutions:
      1. Declare task ':iceberg-common:jar' as an input of ':iceberg-data:revapiAnalyze'.
      2. Declare an explicit dependency on ':iceberg-common:jar' from ':iceberg-data:revapiAnalyze' using Task#dependsOn.
      3. Declare an explicit dependency on ':iceberg-common:jar' from ':iceberg-data:revapiAnalyze' using Task#mustRunAfter.
    
    For more information, please refer to https://docs.gradle.org/8.2/userguide/validation_problems.html#implicit_dependency in the Gradle documentation.

[snazy]

Wait - let's fix the offending task dependencies. Gradle just complains that those are wrong - aka inconsistent builds.

[snazy]

Fix here: #7970