bump github python versions

Author: jxmorris12

.github/workflows/test.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.6, 3.7, 3.8]
+        python-version: [3.6.15, 3.7.15, 3.8.16]
 
     steps:
     - uses: actions/checkout@v2

setup.py

@@ -7,7 +7,7 @@
 
 setup(
     name='language_tool_python',
-    version='2.7.1',
+    version='2.7.2',
     description='Checks grammar using LanguageTool.',
     long_description_content_type='text/markdown',
     long_description=long_description,