💚 fix Clang-dev run

.github/workflows/ubuntu.yml

@@ -21,6 +21,8 @@ jobs:
       - uses: actions/checkout@v3
       - name: Get latest CMake and ninja
         uses: lukka/get-cmake@latest
+      - name: Install git
+        run: apt-get update ; apt-get install -y git
       - name: Run CMake
         run: cmake -S . -B build -DJSON_CI=On
       - name: Build