ci: pin cache actions in iOS workflows

Author: thymikee

.github/workflows/ios-runner-prebuild.yml

@@ -38,7 +38,7 @@ jobs:
 
       - name: Restore prebuilt cache
         id: restore-prebuilt
-        uses: actions/cache/restore@v4
+        uses: actions/cache/restore@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.2.3
         with:
           path: ${{ env.PREBUILT_DIR }}
           key: ios-runner-prebuilt-${{ steps.xcode.outputs.key }}-ios-${{ env.IOS_RUNTIME_VERSION }}
@@ -70,7 +70,7 @@ jobs:
 
       - name: Save prebuilt cache
         if: steps.restore-prebuilt.outputs.cache-hit != 'true'
-        uses: actions/cache/save@v4
+        uses: actions/cache/save@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.2.3
         with:
           path: ${{ env.PREBUILT_DIR }}
           key: ios-runner-prebuilt-${{ steps.xcode.outputs.key }}-ios-${{ env.IOS_RUNTIME_VERSION }}

.github/workflows/ios.yml

@@ -39,7 +39,7 @@ jobs:
 
       - name: Restore iOS runner prebuilt cache
         id: restore-prebuilt
-        uses: actions/cache/restore@v4
+        uses: actions/cache/restore@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.2.3
         with:
           path: ${{ env.PREBUILT_DIR }}
           key: ios-runner-prebuilt-${{ steps.xcode.outputs.key }}-ios-${{ env.IOS_RUNTIME_VERSION }}