Update CI workflow.

Author: VolkerEnderlein

.github/workflows/continuous-integration-workflow.yml

@@ -11,9 +11,10 @@ jobs:
     name: Ubuntu Build
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - name: Checkout submodules
-        run: git submodule update --init --recursive
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          submodules: recursive
       - name: Create build directory and run CMake
         run: |
           sudo apt-get -y update
@@ -33,7 +34,7 @@ jobs:
       #  run:  ctest -C Release -VV
       #  working-directory: cmake_build_dir
       - name: Create Artifacts
-        uses: actions/upload-artifact@v1
+        uses: actions/upload-artifact@v3
         with:
           name: Ubuntu-Artifacts
           path: cmake_install_dir/
@@ -43,9 +44,10 @@ jobs:
 #    name: Windows Build
 #    runs-on: windows-latest
 #    steps:
-#      - uses: actions/checkout@v2
-#      - name: Checkout submodules
-#        run: git submodule update --init --recursive
+#      - name: Checkout repository
+#        uses: actions/checkout@v4
+#        with:
+#          submodules: recursive
 #      - name: Create build directory and run CMake
 #        shell: cmd
 #        run: |
@@ -64,7 +66,7 @@ jobs:
 #      #  run: ctest -C Release -VV
 #      #  working-directory: cmake_build_dir
 #      - name: Create Artifacts
-#        uses: actions/upload-artifact@v1
+#        uses: actions/upload-artifact@v3
 #        with:
 #          name: Windows-Artifacts
 #          path: cmake_install_dir/
@@ -74,9 +76,10 @@ jobs:
 #    name: MacOS Build
 #    runs-on: macos-latest
 #    steps:
-#      - uses: actions/checkout@v2
-#      - name: Checkout submodules
-#        run: git submodule update --init --recursive
+#      - name: Checkout repository
+#        uses: actions/checkout@v4
+#        with:
+#          submodules: recursive
 #      - name: Create build directory and run CMake
 #        run: |
 #          mkdir cmake_download_dir
@@ -94,7 +97,7 @@ jobs:
 #      #  run: ctest -C Release -VV
 #      #  working-directory: cmake_build_dir
 #      - name: Create Artifacts
-#        uses: actions/upload-artifact@v1
+#        uses: actions/upload-artifact@v3
 #        with:
 #          name: MacOS-Artifacts
 #          path: cmake_install_dir/