Bump actions/checkout from 3 to 4 (#158)

* Bump actions/checkout from 3 to 4

Bumps [actions/checkout](https://github.com/actions/checkout) from 3 to 4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v3...v4)

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

* Revert action update for oldschool job

- missing libraries on these systems

---------

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: mrbean-bremen <[email protected]>

.github/workflows/build.yml

@@ -45,7 +45,7 @@ jobs:
         apt-get clean
       
     - name: Checkout PythonQt
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Build PythonQt
       run: |
@@ -168,7 +168,7 @@ jobs:
         python-version: '${{ matrix.python-version }}'
 
     - name: Checkout PythonQt
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Detect exact versions
       id : versions
@@ -255,7 +255,7 @@ jobs:
     steps:
 
     - name: Checkout PythonQt
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Reset PATH
       uses: egor-tensin/cleanup-path@v3

.github/workflows/build_latest.yml

@@ -32,7 +32,7 @@ jobs:
         python-version: '${{ matrix.python-version }}'
 
     - name: Checkout PythonQt
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Set environment
       id: setenv

.github/workflows/builddocs.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout master
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Install Doxygen
         run: sudo apt-get install doxygen graphviz -y