updating clang-format version

.github/workflows/cpp_lint.yml

@@ -10,13 +10,10 @@ jobs:
     - name: Checkout Code
       uses: actions/checkout@v2
 
-    - name: Install setuptools
-      run: pip install setuptools
-
     - name: Format and Lint C++ Code
       uses: DoozyX/[email protected]
       with:
         source: '.'
         extensions: 'cc,cpp,h,hh'
-        clangFormatVersion: 11
+        clangFormatVersion: 15
         style: file