Update GitHub Actions workflows and add actionlint CI

- Update GitHub Actions to latest versions (checkout v4, setup-python v5, github-script v7)
- Fix shellcheck warnings (proper quoting, escaping)
- Add actionlint workflow for automated workflow validation
- Remove unnecessary matrix.python-version references in job names

Author: iory

.github/workflows/actionlint.yml

@@ -0,0 +1,20 @@
+name: Lint GitHub Actions workflows
+
+on:
+  push:
+    paths:
+      - '.github/workflows/**'
+  pull_request:
+    paths:
+      - '.github/workflows/**'
+
+jobs:
+  actionlint:
+    name: Actionlint
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@v4
+
+      - name: Run actionlint
+        uses: reviewdog/action-actionlint@v1

.github/workflows/release.yml

@@ -23,7 +23,7 @@ jobs:
 
       - name: Get PR labels
         id: get_labels
-        uses: actions/github-script@v6
+        uses: actions/github-script@v7
         with:
           script: |
             const prs = context.payload.workflow_run.pull_requests;
@@ -69,7 +69,7 @@ jobs:
           token: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Set up Python
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
           python-version: '3.9'
 
@@ -89,14 +89,14 @@ jobs:
       - name: Install package
         run: |
           python -m pip install --upgrade pip setuptools wheel
-          pip install .[all]
+          pip install .\[all\]
 
       - name: Get version from package
         id: get_version
         run: |
           VERSION=$(python -c "import skrobot; print(skrobot.__version__)")
           echo "Detected version: $VERSION"
-          echo "version=$VERSION" >> $GITHUB_OUTPUT
+          echo "version=$VERSION" >> "$GITHUB_OUTPUT"
 
       - name: Tag and push release
         run: |
@@ -114,7 +114,7 @@ jobs:
           fetch-depth: 0
           token: ${{ secrets.GITHUB_TOKEN }}
       - name: Set up Python
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
           python-version: '3.x'
       - name: Install publishing dependencies

.github/workflows/test.yml

@@ -16,9 +16,9 @@ jobs:
     name: Check Formatting
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
-    - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v4
+    - uses: actions/checkout@v4
+    - name: Set up Python
+      uses: actions/setup-python@v5
       with:
         python-version: 3.8
     - name: Install Formatting
@@ -46,15 +46,15 @@ jobs:
     name: Build Sphinx Documentation
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
-    - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v4
+    - uses: actions/checkout@v4
+    - name: Set up Python
+      uses: actions/setup-python@v5
       with:
         python-version: 3.11
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        pip install --no-cache-dir .[all]
+        pip install --no-cache-dir .\[all\]
     - name: Build Sphinx Documentation
       working-directory: ./docs/source
       run: |
@@ -65,7 +65,7 @@ jobs:
     name: Check Requirements Formatting
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Check Formatting
       run: |
         sort -C requirements.txt
@@ -156,9 +156,9 @@ jobs:
             remove-setuptools: true  # <- this one uses the latest setuptools
       fail-fast: false
     steps:
-    - uses: actions/checkout@v3
-    - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
+    - uses: actions/checkout@v4
+    - name: Set up Python
+      uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
     - name: Wait for apt-get lock
@@ -180,7 +180,7 @@ jobs:
     - name: Install scikit-robot
       run: |
         pip cache purge
-        pip install --no-cache-dir .[all]
+        pip install --no-cache-dir .\[all\]
 
     - name: Install NumPy and SciPy
       run: |
@@ -211,7 +211,7 @@ jobs:
             break
           else
             echo "Tests failed on attempt $i"
-            if [ $i -eq 3 ]; then
+            if [ "$i" -eq 3 ]; then
               echo "All retry attempts failed"
               exit 1
             fi