ci: cache ktlint binary in GitHub Actions workflows

.github/workflows/android.yml

@@ -45,11 +45,23 @@ jobs:
       - name: Grant Execute Permission for Gradlew
         run: chmod +x gradlew
 
+      - name: Cache ktlint
+        id: cache-ktlint
+        uses: actions/cache@v4
+        with:
+          path: ~/.local/bin/ktlint
+          key: ktlint-1.2.1
+
       - name: Install ktlint
+        if: steps.cache-ktlint.outputs.cache-hit != 'true'
         run: |
+          mkdir -p ~/.local/bin
           curl -sSLO https://github.com/pinterest/ktlint/releases/download/1.2.1/ktlint
           chmod +x ktlint
-          sudo mv ktlint /usr/local/bin/
+          mv ktlint ~/.local/bin/
+
+      - name: Add local bin to PATH
+        run: echo "$HOME/.local/bin" >> $GITHUB_PATH
 
       - name: Run ktlintCheck
         run: ./gradlew ktlintCheck