Add tzdata for libc++

Author: boomanaiden154

.github/workflows/premerge.yaml

@@ -24,7 +24,7 @@ jobs:
           fetch-depth: 2
       - name: Setup system deps
         run: |
-          apt-get update && apt-get install -y ccache python3 python3-pip file
+          apt-get update && apt-get install -y ccache python3 python3-pip file tzdata
       - name: Build and Test
         run: |
           git config --global --add safe.directory '*'