Update actions and Python version. (#150)

Author: MatthewHambley

.github/workflows/performance.yml

@@ -14,22 +14,22 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out source
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           path: stylist
           fetch-depth: 1
 
       - name: Checkout pages
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           ref: gh-pages
           fetch-depth: 1
           path: gh-pages
 
       - name: Set Python
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v5
         with:
-          python-version: 3.7
+          python-version: 3.9
 
       - name: Cache pip
         uses: actions/cache@v4

.github/workflows/publish.yml

@@ -10,12 +10,12 @@ jobs:
     name: Build package
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Set up Python environment
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
-          python-version: "3.7"
+          python-version: "3.9"
 
       - name: Cache pip
         uses: actions/cache@v4

.github/workflows/pullrequest.yml

@@ -20,10 +20,10 @@ jobs:
         python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
 
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
 

.github/workflows/sphinx.yml

@@ -23,20 +23,20 @@ jobs:
       # Preparation
       #
       - name: Check out source
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           path: stylist
           fetch-depth: 1
 
       - name: Checkout pages
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           ref: gh-pages
           fetch-depth: 1
           path: gh-pages
 
       - name: Install Python
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v5
         with:
           python-version: 3.11