add 3.9 and 3.10 to CI matrix, update several GH actions

Author: Phil Varner

.github/workflows/cicd.yaml

@@ -8,6 +8,9 @@ on:
 jobs:
   test:
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: [ '3.8', '3.9', '3.10']
     timeout-minutes: 10
 
     services:
@@ -32,13 +35,13 @@ jobs:
 
     steps:
       - name: Check out repository code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       # Setup Python (faster than using Python container)
       - name: Setup Python
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v3
         with:
-          python-version: "3.8"
+          python-version: ${{ matrix.python-version }
 
       - name: Lint code
         uses: pre-commit/[email protected]
@@ -109,6 +112,6 @@ jobs:
   test-docs:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - name: Test generating docs
         run: make docs

.github/workflows/deploy_mkdocs.yml

@@ -18,10 +18,10 @@ jobs:
 
     steps:
       - name: Checkout master
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Set up Python 3.8
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v3
         with:
           python-version: 3.8
 

.github/workflows/publish.yml

@@ -10,10 +10,10 @@ jobs:
     name: release
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
       - name: Set up Python 3.x
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v3
         with:
           python-version: "3.x"