run dependabot on actions, remove GHA dependency on snok and use pipx to install poetry instead

Author: bckohan

.github/dependabot.yml

@@ -1,11 +1,21 @@
 # To get started with Dependabot version updates, you'll need to specify which
 # package ecosystems to update and where the package manifests are located.
 # Please see the documentation for all configuration options:
-# https://help.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
+# https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
 
 version: 2
 updates:
-  - package-ecosystem: "pip" # See documentation for possible values
-    directory: "/" # Location of package manifests
+  # GitHub Actions
+  - package-ecosystem: "github-actions"
+    directory: "/"
     schedule:
       interval: "daily"
+    commit-message:
+      prefix: ⬆
+  # Python
+  - package-ecosystem: "pip"
+    directory: "/"
+    schedule:
+      interval: "daily"
+    commit-message:
+      prefix: ⬆

.github/workflows/lint.yml

@@ -48,10 +48,13 @@ jobs:
         with:
           python-version: ${{ matrix.python-version }}
       - name: Install Poetry
-        uses: snok/install-poetry@v1
-        with:
-          virtualenvs-create: true
-          virtualenvs-in-project: true
+        run: |
+          pip install pipx
+          pipx ensurepath
+          pipx install poetry
+          poetry config --local virtualenvs.create true
+          poetry config --local virtualenvs.in-project true
+          poetry env use python
       - name: Install Dependencies
         run: |
           poetry config virtualenvs.in-project true

.github/workflows/test.yml

@@ -52,10 +52,13 @@ jobs:
         python-version: ${{ matrix.python-version }}
 
     - name: Install Poetry
-      uses: snok/install-poetry@v1
-      with:
-        virtualenvs-create: true
-        virtualenvs-in-project: true
+      run: |
+        pip install pipx
+        pipx ensurepath
+        pipx install poetry
+        poetry config --local virtualenvs.create true
+        poetry config --local virtualenvs.in-project true
+        poetry env use python
     - name: Install Release Dependencies
       run: |
         poetry config virtualenvs.in-project true
@@ -111,11 +114,15 @@ jobs:
         with:
           python-version: '3.12'
 
+
       - name: Install Poetry
-        uses: snok/install-poetry@v1
-        with:
-          virtualenvs-create: true
-          virtualenvs-in-project: true
+        run: |
+          pip install pipx
+          pipx ensurepath
+          pipx install poetry
+          poetry config --local virtualenvs.create true
+          poetry config --local virtualenvs.in-project true
+          poetry env use python
     
       - name: Install Release Dependencies
         run: |