chore(deps): update actions/checkout action to v3 (#70)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/scip-docker.yml

@@ -13,7 +13,7 @@ jobs:
   release-image:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - name: Install asdf.
         uses: asdf-vm/actions/setup@v2.1.0
       - name: Cache asdf and asdf-managed tools.

.github/workflows/scip-release.yml

@@ -9,7 +9,7 @@ jobs:
   release-image:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - uses: docker/setup-buildx-action@v1
       - uses: actions/setup-node@v2
         with:

.github/workflows/scip-snapshot.yml

@@ -12,7 +12,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - name: Install asdf.
         uses: asdf-vm/actions/setup@v2.1.0
       - name: Cache asdf and asdf-managed tools.