fix: drop py3.7 support for v14

.github/workflows/docs-checker.yml

@@ -12,7 +12,7 @@ jobs:
       - name: 'Setup Environment'
         uses: actions/setup-python@v2
         with:
-          python-version: 3.7
+          python-version: 3.8
 
       - name: 'Clone repo'
         uses: actions/checkout@v2

setup.py

@@ -57,5 +57,5 @@ setup(
 	{
 		'clean': CleanCommand
 	},
-	python_requires='>=3.7'
+	python_requires='>=3.8'
 )