Up Clang from 17 to 19 on GitHub Actions (nonstd-lite issue 75, thanks @striezel)

Author: martinmoene

.github/workflows/ci.yml

@@ -52,7 +52,7 @@ jobs:
             os: 'ubuntu-22.04'
           - version: 12
             os: 'ubuntu-22.04'
-          - version: 17
+          - version: 19
             os: 'ubuntu-24.04'
 
     runs-on: ${{ matrix.os }}