Fix job setup

Author: Vaughn

.github/workflows/build_unittest.yml

@@ -43,6 +43,10 @@ jobs:
     - name: Skip Duplicate Actions
       uses: fkirc/skip-duplicate-actions@v5.3.1
     - uses: actions/checkout@v4 # https://github.com/marketplace/actions/checkout
+    - name: Setup Cpp
+      uses: aminya/setup-cpp@v1 # https://github.com/marketplace/actions/setup-cpp-c-c
+      with:
+          compiler: gcc-14
     - name: configure
       run: |
         env