Bump minimum required python version to v3.8

Author: tuxuser

.github/workflows/build.yml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ['3.7', '3.8', '3.9', '3.10', '3.11', '3.12']
+        python-version: ['3.8', '3.9', '3.10', '3.11', '3.12']
 
     steps:
     - uses: actions/checkout@v4

CONTRIBUTING.md

@@ -98,6 +98,6 @@ Before you submit a pull request, check that it meets these guidelines:
 2. If the pull request adds functionality, the docs should be updated. Put
    your new functionality into a function with a docstring, and add the
    feature to the list in README.md.
-3. The pull request should work for Python 3.7+. Check
+3. The pull request should work for Python 3.8+. Check
    <https://github.com/OpenXbox/xbox-webapi-python/actions?query=workflow%3Abuild>
    and make sure that the tests pass for all supported Python versions.

README.md

@@ -19,7 +19,7 @@ Authentication is supported via OAuth2.
 
 ## Dependencies
 
-- Python >= 3.7
+- Python >= 3.8
 
 ## How to use