chore: remove unused matrix

Author: chrisbbreuer

.github/workflows/ci.yml

@@ -18,7 +18,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-latest, windows-latest, macos-latest]
+        os: [ubuntu-latest]
 
     steps:
       - uses: actions/checkout@v4
@@ -33,7 +33,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-latest, windows-latest, macos-latest]
+        os: [ubuntu-latest]
 
     steps:
       - uses: actions/checkout@v4