CI: change python CI version to 3.9

Minimum version for dependencies is 3.9? Not sure how this was working.

Also delete init.yml which was only used to initialize the package.

Author: galenlynch

.github/workflows/init.yml

@@ -16,10 +16,10 @@ jobs:
         ref: ${{ env.DEFAULT_BRANCH }}
         fetch-depth: 0
         token: ${{ secrets.SERVICE_TOKEN }}
-    - name: Set up Python 3.8
+    - name: Set up Python 3.9
       uses: actions/setup-python@v3
       with:
-        python-version: 3.8
+        python-version: 3.9
     - name: Install dependencies
       run: | 
         python -m pip install -e .[dev] --no-cache-dir
@@ -73,10 +73,10 @@ jobs:
       - uses: actions/checkout@v3
       - name: Pull latest changes
         run: git pull origin main
-      - name: Set up Python 3.8
+      - name: Set up Python 3.9
         uses: actions/setup-python@v2
         with:
-          python-version: 3.8
+          python-version: 3.9
       - name: Install dependencies
         run: |
           pip install --upgrade setuptools wheel twine build

.github/workflows/tag_and_publish.yml

@@ -10,15 +10,15 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [ '3.8', '3.9', '3.10' ]
+        python-version: [ '3.9', '3.10' ]
     steps:
     - uses: actions/checkout@v3
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v3
       with:
         python-version: ${{ matrix.python-version }}
     - name: Install dependencies
-      run: | 
+      run: |
         python -m pip install -e .[dev]
     - name: Run linter checks
       run: flake8 . && interrogate --verbose .