Merge pull request zaproxy#9300 from thc202/dependabot/gradle

Update project dependencies with dependabot

Author: psiinon

.github/dependabot.yml

@@ -9,3 +9,19 @@ updates:
         applies-to: version-updates
         patterns:
         - "*"
+  - package-ecosystem: "gradle"
+    directory: "/"
+    exclude-paths:
+      - "buildSrc"
+    schedule:
+      interval: "weekly"
+    groups:
+      gradle:
+        applies-to: version-updates
+        patterns:
+          - "*"
+    ignore:
+      - dependency-name: "gradle-wrapper"
+      - dependency-name: "com.google.errorprone:error_prone_core"
+        versions: [ ">= 2.43.0" ] # versions 2.43.x and later require Java 21
+      - dependency-name: "com.diffplug.spotless*" # newer versions lead to runtime error, will need to update the common zap plugin first