feat!: drop Python 3.6 support (#135)

BREAKING CHANGE: Python 3.6 is past end-of-life and is no longer supported. Keeping it in `pyproject.toml` was causing pains trying to install packages. Let's drop it while we're dropping support for other old stuff.

Author: crccheck

.github/workflows/ci.yml

@@ -14,7 +14,6 @@ jobs:
         uses: fabiocaccamo/create-matrix-action@v1
         with:
           matrix: |
-            python-version {3.6}, django-version {2.0,2.1,2.2,3.0,3.1}
             python-version {3.7}, django-version {2.0,2.1,2.2,3.0,3.1}
             python-version {3.8}, django-version {2.2,3.0,3.1,3.2,4.0}
             python-version {3.9}, django-version {2.2,3.0,3.1,3.2,4.0}

.github/workflows/conventional-pr.yml

@@ -11,7 +11,7 @@ jobs:
   lint-pr:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       # check for the most recent release: https://github.com/CondeNast/conventional-pull-request-action/releases
       - uses: CondeNast/[email protected]
         env:

.github/workflows/release.yml

@@ -11,12 +11,12 @@ jobs:
     runs-on: ubuntu-latest
     environment: release
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
         with:
           fetch-depth: 0
       - name: Python Semantic Release
         # https://github.com/relekang/python-semantic-release/releases
-        uses: relekang/python-semantic-release@v7.23.0
+        uses: relekang/python-semantic-release@v7.26.0
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           pypi_token: ${{ secrets.PYPI_TOKEN }}

poetry.lock

@@ -16,18 +16,17 @@ classifiers = [
     "License :: OSI Approved :: Apache Software License",
     "Operating System :: OS Independent",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.6",
     "Programming Language :: Python :: 3.7",
     "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
 ]
 
 [tool.poetry.dependencies]
-python = "^3.6"
+python = "^3.7"
 
 [tool.poetry.dev-dependencies]
-coverage = "4.5.4"
+coverage = "^6.3.2"
 django-extensions = "^3.1.5"
 factory-boy = "^3.2.1"
 dj-database-url = "0.5.0"