RHINENG-11310: update actions/checkout

https://github.blog/changelog/2024-03-07-github-actions-all-actions-will-run-on-node20-instead-of-node16-by-default/

.github/workflows/open_api_spec.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: Spec validation with OpenAPIv3 (docs/v3/openapi.json)
       run: docker run --rm -v ${PWD}/docs:/docs:Z openapitools/openapi-generator-cli:v6.0.1 validate -i /docs/v3/openapi.json
 
@@ -23,7 +23,7 @@ jobs:
     needs: [spec_validation]
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: Generate Python client with OpenAPIv3 (docs/v3/openapi.json)
       run: docker run --rm -v ${PWD}/docs/v3:/local:Z openapitools/openapi-generator-cli:v6.0.1 generate -i /local/openapi.json -g python -o /local/client
     - uses: actions/upload-artifact@v2

.github/workflows/semantic-release.yml

@@ -9,7 +9,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: increment version, commit, push
       run: |
         DOC_FILE="docs/v3/openapi.json docs/admin/openapi.json"

.github/workflows/unittests.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: Run unit tests
       run: docker-compose -f docker-compose.test.yml up --build --exit-code-from test
     - uses: codecov/codecov-action@v1