also pin official github actions

.github/workflows/appimage.yml

@@ -44,9 +44,9 @@ jobs:
             openjfx-url: 'https://download2.gluonhq.com/openjfx/25/openjfx-25_linux-aarch64_bin-jmods.zip'
             openjfx-sha: '951c52481af0ec5885b06f1ebaa8a10da7e8ea23c5e1ef3e2f6f11fa1b3a7ce1'
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8
       - name: Setup Java
-        uses: actions/setup-java@v5
+        uses: actions/setup-java@dded0888837ed1f317902acf8a20df0ad188d165
         with:
           distribution: ${{ env.JAVA_DIST }}
           java-version: ${{ env.JAVA_VERSION }}
@@ -175,7 +175,7 @@ jobs:
           gpg --batch --quiet --passphrase-fd 0 --pinentry-mode loopback -u 615D449FE6E6A235 --detach-sign -a cryptomator-*.AppImage
           gpg --batch --quiet --passphrase-fd 0 --pinentry-mode loopback -u 615D449FE6E6A235 --detach-sign -a cryptomator-*.AppImage.zsync
       - name: Upload artifacts
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02
         with:
           name: appimage-${{ matrix.appimage-suffix }}
           path: |
@@ -201,7 +201,7 @@ jobs:
     if: github.event_name == 'release' && needs.get-version.outputs.versionType == 'stable'
     steps:
       - name: Download AppImages
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@634f93cb2916e3fdff6788551b99b062d0335ce0
         with:
           path: downloads/
           merge-multiple: true
@@ -212,7 +212,7 @@ jobs:
           echo "x64-sha256sum=${X64_SHA256}" >> "$GITHUB_OUTPUT"
           AARCH64_SHA256=$(sha256sum downloads/cryptomator-*-aarch64.AppImage | cut -d ' ' -f1)
           echo "aarch64-sha256sum=${AARCH64_SHA256}" >> "$GITHUB_OUTPUT"
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8
         with:
           repository: 'cryptomator/aur-bin'
           token: ${{ secrets.CRYPTOBOT_PR_TOKEN }}