build(deps): bump gradle/actions from 4 to 6

Bumps [gradle/actions](https://github.com/gradle/actions) from 4 to 6.
- [Release notes](https://github.com/gradle/actions/releases)
- [Commits](gradle/actions@v4...v6)

---
updated-dependencies:
- dependency-name: gradle/actions
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/build.yml

@@ -31,5 +31,5 @@ jobs:
       - uses: actions/setup-node@v4
         with:
           node-version: 22
-      - uses: gradle/actions/setup-gradle@v4
+      - uses: gradle/actions/setup-gradle@v6
       - run: ./gradlew build buildPlugin --stacktrace

.github/workflows/cascade.yml

@@ -26,7 +26,7 @@ jobs:
       - uses: actions/setup-node@v4
         with:
           node-version: 22
-      - uses: gradle/actions/setup-gradle@v4
+      - uses: gradle/actions/setup-gradle@v6
       - name: Bump the bundled xslint-lsp to the released version
         id: bump
         env:

.github/workflows/detekt.yml

@@ -21,5 +21,5 @@ jobs:
         with:
           distribution: temurin
           java-version: 21
-      - uses: gradle/actions/setup-gradle@v4
+      - uses: gradle/actions/setup-gradle@v6
       - run: ./gradlew detekt --stacktrace

.github/workflows/release.yml

@@ -23,7 +23,7 @@ jobs:
       - uses: actions/setup-node@v4
         with:
           node-version: 22
-      - uses: gradle/actions/setup-gradle@v4
+      - uses: gradle/actions/setup-gradle@v6
       - name: Publish to the JetBrains Marketplace
         env:
           PUBLISH_TOKEN: ${{ secrets.JETBRAINS_TOKEN }}

.github/workflows/verify.yml

@@ -24,5 +24,5 @@ jobs:
       - uses: actions/setup-node@v4
         with:
           node-version: 22
-      - uses: gradle/actions/setup-gradle@v4
+      - uses: gradle/actions/setup-gradle@v6
       - run: ./gradlew verifyPlugin --stacktrace