fixup! build: support Python 3.15

Author: MikeMcC399

.github/workflows/test-linux-perfetto.yml

@@ -20,7 +20,7 @@ concurrency:
   cancel-in-progress: true
 
 env:
-  PYTHON_VERSION: '3.14'
+  PYTHON_VERSION: '3.15'
   FLAKY_TESTS: keep_retrying
   CLANG_VERSION: '19'
   CC: ${{ (github.base_ref == 'main' || github.ref_name == 'main') && 'sccache' || '' }} clang-19