Support git versions with actions

.github/workflows/build.yaml

@@ -8,12 +8,17 @@ jobs:
   build_and_test:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
+        with:
+          # Need to clone everything to determine version from git.
+          fetch-depth: 0
 
       - name: Set up Python
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v3
         with:
           python-version: 3.8
+          cache: "pip"
+          cache-dependency-path: "setup.cfg"
 
       - name: Build and install
         run: |

.github/workflows/cmake.yaml

@@ -10,12 +10,16 @@ jobs:
   cmake:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
+        with:
+          # Need to clone everything to determine version from git.
+          fetch-depth: 0
 
       - name: Set up Python
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v3
         with:
           python-version: 3.8
+          cache: "pip"
 
       - name: Install Python prereqs
         run: |

.github/workflows/lint.yaml

@@ -8,12 +8,13 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
       - name: Set up Python
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v3
         with:
-          python-version: 3.7
+          python-version: 3.8
+          cache: "pip"
 
       - name: Install
         run: pip install -r <(curl https://raw.githubusercontent.com/lsst/linting/main/requirements.txt)