fix(ci): Update CI tests to actually install the right python version (#3156)

fix(ci): update CI tests to actually install the right python version

Author: Paillat-dev

.github/workflows/lib-checks.yml

@@ -8,7 +8,7 @@ on:
       - "*.toml"
       - "*.py"
       - ".*"
-    branches: [master]
+    branches: [ master ]
   pull_request:
     paths:
       - "discord/**"
@@ -140,16 +140,16 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-latest, windows-latest, macos-latest]
-        python-version: ["3.10", "3.11", "3.12", "3.13"]
+        os: [ ubuntu-latest, windows-latest, macos-latest ]
+        python-version: [ "3.10", "3.11", "3.12", "3.13" ]
     steps:
       - name: "Checkout Repository"
         uses: actions/checkout@v6
 
       - name: "Setup Python"
         uses: actions/setup-python@v6
         with:
-          python-version: "3.13"
+          python-version: ${{ matrix.python-version }}
           cache: "pip"
           cache-dependency-path: "pyproject.toml"
 
@@ -163,7 +163,7 @@ jobs:
         run: tox
   tests-pass: # ref: https://github.com/orgs/community/discussions/4324#discussioncomment-3477871
     runs-on: ubuntu-latest
-    needs: [tests]
+    needs: [ tests ]
     if: always() && github.event_name != 'schedule'
     steps:
       - name: Tests succeeded