Disable Gradle caching to prevent disk space exhaustion

The granular cache entries (especially gradle-transforms at ~6.5 GB for
the IntelliJ SDK) cannot be excluded via gradle-home-cache-excludes and
fill the runner disk. Disable caching entirely — the download overhead
per job is small.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: flyingsilverfin

.github/workflows/build.yml

@@ -27,8 +27,7 @@ jobs:
           java-version: 21
       - uses: gradle/actions/setup-gradle@v4
         with:
-          gradle-home-cache-excludes: |
-            caches/modules-2/files-2.1/com.jetbrains
+          cache-disabled: true
       - run: ./gradlew test
   verify:
     name: Verify Plugin
@@ -42,8 +41,7 @@ jobs:
           java-version: 21
       - uses: gradle/actions/setup-gradle@v4
         with:
-          gradle-home-cache-excludes: |
-            caches/modules-2/files-2.1/com.jetbrains
+          cache-disabled: true
       - run: ./gradlew verifyPluginStructure verifyPlugin
   build:
     name: Build
@@ -60,8 +58,7 @@ jobs:
           java-version: 21
       - uses: gradle/actions/setup-gradle@v4
         with:
-          gradle-home-cache-excludes: |
-            caches/modules-2/files-2.1/com.jetbrains
+          cache-disabled: true
       - run: ./gradlew buildPlugin
       - name: Export Properties
         id: properties

.github/workflows/release.yml

@@ -19,8 +19,7 @@ jobs:
           java-version: 21
       - uses: gradle/actions/setup-gradle@v4
         with:
-          gradle-home-cache-excludes: |
-            caches/modules-2/files-2.1/com.jetbrains
+          cache-disabled: true
       - name: Publish Plugin
         env:
           PUBLISH_TOKEN: ${{ secrets.PUBLISH_TOKEN }}