Update to clang-format-15 for Lint CI job

Author: ciaranbor

.github/workflows/ci.yml

@@ -23,7 +23,7 @@ jobs:
       run: pip3 install codespell
 
     - name: Lint
-      run: cmake -D FORMAT_COMMAND=clang-format-14 -P cmake/lint.cmake
+      run: cmake -D FORMAT_COMMAND=clang-format-15 -P cmake/lint.cmake
 
     - name: Spell check
       if: always()