what could this be

.forgejo/workflows/build.yaml

@@ -14,13 +14,13 @@ jobs:
       - name: Checkout code
         uses: https://github.com/actions/checkout@v3
       - name: Cache apt packages
-        uses: https://github.com/actions/cache@v3
+        uses: https://github.com/actions/cache@v2
         with:
           path: /var/cache/apt/archives
           key: apt-${{ runner.os }}-${{ hashFiles('**/apt-packages.txt') }}
           restore-keys: apt-${{ runner.os }}-
       - name: Cache cargo build
-        uses: https://github.com/actions/cache@v3
+        uses: https://github.com/actions/cache@v2
         with:
           path: target
           key: cargo-build-${{ hashFiles('**/Cargo.lock') }}
@@ -28,7 +28,7 @@ jobs:
 
       # --- Cache apt packages ---
       - name: Cache cargo registry
-        uses: https://github.com/actions/cache@v3
+        uses: https://github.com/actions/cache@v2
         with:
           path: |
             ~/.cargo/registry