Downgrade to Gradle 8.1 to prevent triggering bndtools/bnd#5695

See https://docs.gradle.org/8.2/userguide/upgrading_version_8.html#deferred_or_avoided_configuration_of_some_tasks for more details.

gradle/wrapper/gradle-wrapper.properties

@@ -1,7 +1,9 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionSha256Sum=38f66cd6eef217b4c35855bb11ea4e9fbc53594ccccb5fb82dfd317ef8c2c5a3
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.2-bin.zip
+distributionSha256Sum=e111cb9948407e26351227dabce49822fb88c37ee72f1d1582a69c68af2e702f
+# WARNING: don't upgrade to Gradle 8.2 until https://github.com/bndtools/bnd/issues/5695 is released and biz.aQute.bnd.builder updated above 6.4.0.
+# See https://docs.gradle.org/8.2/userguide/upgrading_version_8.html#deferred_or_avoided_configuration_of_some_tasks
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.1.1-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME