Bump actions/checkout from 2 to 3 (#14)

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](actions/checkout@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>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/build_test.yml

@@ -30,7 +30,7 @@ jobs:
 
     steps:
       - name: Checkout source code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Initialize CodeQL
         uses: github/codeql-action/init@v1

.github/workflows/clang_format.yml

@@ -6,7 +6,7 @@ jobs:
   clang-format:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v3
       - uses: DoozyX/clang-format-lint-action@v0.13
         with:
           source: 'src include'

.github/workflows/release_assets.yml

@@ -22,7 +22,7 @@ jobs:
 
     steps:
       - name: Checkout source code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: 'Dependencies: restore Qt from cache'
         id: cache-qt