fix pipeline

.gitlab-ci.yml

@@ -72,7 +72,7 @@ mscbdecomp_tests:
     stage: test
     script:
       - echo "deb http://deb.debian.org/debian bullseye-backports main" >> /etc/apt/sources.list
-      - apt-get install -y -t bullseye-backports cmake
+      - apt-get update && apt-get install -y -t bullseye-backports cmake
       - cmake -E make_directory build
       - cd build
       - cmake -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=RELEASE ..