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](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>

.github/workflows/Processor_FileExeVerifySignature.yaml

@@ -27,7 +27,7 @@ jobs:
         shell: cmd
         run: powershell -command "Set-ExecutionPolicy -Force -ExecutionPolicy RemoteSigned -Scope CurrentUser"
 
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
       - name: Set up Python
         uses: actions/setup-python@v2

.github/workflows/black.yaml

@@ -18,7 +18,7 @@ jobs:
     name: runner / black formatter
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - name: Run black formatter checks
         # https://github.com/rickstaa/action-black
         uses: rickstaa/action-black@v1

.github/workflows/codeql-analysis.yaml

@@ -29,7 +29,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
         with:
           # We must fetch at least the immediate parents so that if this is
           # a pull request then we can checkout the head.

.github/workflows/plistlint.yaml

@@ -17,7 +17,7 @@ jobs:
   plistlint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
       - name: Set up Python
         uses: actions/setup-python@v2