Update CI actions.

* Scripting should use apt-get instead of apt
* Update action versions
* Update SPEC0 versions of Matplotlib that are tested
* Replace deprecated ::set-output with $GITHUB_OUTPUT.

Author: bcbnz

.github/workflows/ci-tests.yml

@@ -18,10 +18,10 @@ jobs:
       fail-fast: false
       matrix:
         python-version: [3.12, 3.13]
-        matplotlib-version: [ "3.7.5", "3.10.0" ]
+        matplotlib-version: [ "3.8.4", "3.10.6" ]
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Set up Python
         uses: actions/setup-python@v5
@@ -31,8 +31,8 @@ jobs:
 
       - name: Install system libraries
         run: |
-          sudo apt update
-          xargs -a .github/workflows/requirements-test-apt.txt sudo apt install -y
+          sudo apt-get update
+          xargs -a .github/workflows/requirements-test-apt.txt sudo apt-get install -y
 
       - name: Install test environment
         run: |

.github/workflows/lint.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Set up Python
         id: setup

.github/workflows/matplotlib-main.yml

@@ -14,18 +14,18 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
-          python-version: 3.12
+          python-version: 3.13
           architecture: x64
 
       - name: Install system libraries
         run: |
-          sudo apt update
-          xargs -a .github/workflows/requirements-test-apt.txt sudo apt install -y
+          sudo apt-get update
+          xargs -a .github/workflows/requirements-test-apt.txt sudo apt-get install -y
 
       - name: Install test environment
         run: |
@@ -35,7 +35,7 @@ jobs:
       - name: Find Matplotlib version
         id: mpl-main-version
         run: |
-          echo "::set-output name=matplotlib-version::$(python -c 'import matplotlib;print(matplotlib.__version__)')"
+          echo "matplotlib-version=$(python -c 'import matplotlib;print(matplotlib.__version__)')" >> $GITHUB_OUTPUT
 
       - name: Run unit tests
         run: pytest --cov-report=xml