Bump actions/checkout from 2 to 3

Bumps [actions/checkout](https://github.com/actions/checkout) from 2 to 3.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/v2...v3)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/codeql-analysis.yml

@@ -25,7 +25,7 @@ jobs:
     steps:
     -
       name: Checkout repository
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
     # Initializes the CodeQL tools for scanning.
     -
       name: Initialize CodeQL

.github/workflows/sync-back-to-dev.yml

@@ -11,7 +11,7 @@ jobs:
     name: Syncing branches
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Opening pull request
         id: pull
         uses: tretuna/sync-branches@1.4.0

.github/workflows/test.yml

@@ -14,7 +14,7 @@ jobs:
     steps:
     -
       name: Checkout repository
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
     -
       name: Run Smoke Tests
       run: |
@@ -37,7 +37,7 @@ jobs:
     steps:
     -
       name: Checkout repository
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
     -
       name: Set up Python 3.8
       uses: actions/setup-python@v3