Update actions/checkout commit hash to ec3a7ce

Signed-off-by: Renovate Bot <bot@renovateapp.com>

.github/workflows/nightly.yml

@@ -16,7 +16,7 @@ jobs:
       HEDGEDOC_IMAGE: quay.io/hedgedoc/hedgedoc-nightly
     steps:
       - name: Checkout
-        uses: actions/checkout@1e204e9a9253d643386038d443f96446fa156a97 # renovate: tag=v2
+        uses: actions/checkout@ec3a7ce113134d7a93b817d10a8272cb61118579 # renovate: tag=v2
 
       - name: Set date
         run: echo TODAY=$(date +%Y%m%d) >> $GITHUB_ENV

.github/workflows/release.yml

@@ -15,7 +15,7 @@ jobs:
       HEDGEDOC_IMAGE: quay.io/hedgedoc/hedgedoc
     steps:
       - name: Checkout
-        uses: actions/checkout@1e204e9a9253d643386038d443f96446fa156a97 # renovate: tag=v2
+        uses: actions/checkout@ec3a7ce113134d7a93b817d10a8272cb61118579 # renovate: tag=v2
 
       - name: Set up QEMU
         uses: docker/setup-qemu-action@27d0a4f181a40b142cce983c5393082c365d1480 # renovate: tag=v1

.github/workflows/test.yml

@@ -14,7 +14,7 @@ jobs:
     env:
       BASE: ${{ matrix.base }} # needed in tests/version.sh
     steps:
-      - uses: actions/checkout@1e204e9a9253d643386038d443f96446fa156a97 # renovate: tag=v2
+      - uses: actions/checkout@ec3a7ce113134d7a93b817d10a8272cb61118579 # renovate: tag=v2
       - name: Build ${{ matrix.base }} image
         run: docker build -f ${{ matrix.base }}/Dockerfile -t hedgedoc .
       - run: docker network create postgres