Stop testing against Python 3.8

Poetry 2.x no longer supports this.

Author: jacebrowning

.appveyor.yml

@@ -5,7 +5,7 @@ environment:
     RANDOM_SEED: 0
   matrix:
     - PYTHON_MAJOR: 3
-      PYTHON_MINOR: 8
+      PYTHON_MINOR: 9
 
 cache:
   - .venv -> poetry.lock

.github/workflows/main.yml

@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11"]
+        python-version: ["3.9", "3.10", "3.11"]
 
     steps:
     - uses: actions/checkout@v4

Makefile

@@ -7,7 +7,7 @@ MODULES := $(wildcard $(PACKAGE)/*.py)
 all: format check test mkdocs ## Run all tasks that determine CI status
 
 .PHONY: dev
-dev: install .clean-test ## Continuously run all CI tasks when files chanage
+dev: install .clean-test ## Continuously run all CI tasks when files change
 	poetry run sniffer
 
 .PHONY: demo
@@ -90,7 +90,7 @@ format: install
 	@ echo
 
 .PHONY: check
-check: install format  ## Run formaters, linters, and static analysis
+check: install format  ## Run formatters, linters, and static analysis
 ifdef CI
 	git diff --exit-code
 endif