CI: also trigger if a .toml file changes

Usually this might be pyproject.toml.

.github/workflows/ci.yml

@@ -11,6 +11,7 @@ on:
     - '**.c'
     - '**.h'
     - '**.yml'
+    - '**.toml'
     - '**.cfg'
     - '**.ini'
     - 'requirements.d/*'
@@ -23,6 +24,7 @@ on:
     - '**.c'
     - '**.h'
     - '**.yml'
+    - '**.toml'
     - '**.cfg'
     - '**.ini'
     - 'requirements.d/*'