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/ccpp.yml

@@ -43,7 +43,7 @@ jobs:
             toolchain: ninja-vs-win64-cxx17
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     
     - uses: lukka/get-cmake@latest
     
@@ -64,7 +64,7 @@ jobs:
 
     - name: Checkout Hunter toolchains
       if: endsWith(matrix.name, 'hunter')
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
       with:
         repository: cpp-pm/polly
         path: cmake/polly

.github/workflows/sanitizer.yml

@@ -11,7 +11,7 @@ jobs:
     name: adress-sanitizer
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - uses: lukka/get-cmake@latest    
     - uses: lukka/set-shell-env@v1
       with:
@@ -35,7 +35,7 @@ jobs:
     name: undefined-behavior-sanitizer
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - uses: lukka/get-cmake@latest    
     - uses: lukka/set-shell-env@v1
       with: