Update cpp-unit-test.yml

Author: mandlil

.github/workflows/cpp-unit-test.yml

@@ -18,7 +18,8 @@ jobs:
 
     - name: Set up C++ environment
       run: |
-        sudo apt-get install \
+        sudo apt-get update \
+        sudo apt-get install -y --fix-missing libboost-all-dev \
         cmake cmake-curses-gui libprotobuf-dev libgtest-dev libre2-dev \
         libicu-dev libboost-dev libboost-thread-dev libboost-system-dev \
         protobuf-compiler