fix(container): missing CMake dependency

[coryan]

Fixes #8491

This change is 

[google-cloud-cpp-bot]

Google Cloud Build Logs
For commit: ca0d1fc5be4cdd2b2b58f10087329df1484bc16a

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[codecov]

Codecov Report

Merging #8492 (ca0d1fc) into main (1b2e1fa) will increase coverage by 0.00%.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #8492   +/-   ##
=======================================
  Coverage   93.91%   93.91%           
=======================================
  Files        1452     1452           
  Lines      125783   125783           
=======================================
+ Hits       118124   118128    +4     
+ Misses       7659     7655    -4     

Impacted Files	Coverage Δ
...cloud/pubsub/internal/subscription_session_test.cc	98.00% <0.00%> (+0.24%)	⬆️
google/cloud/bigtable/async_read_stream_test.cc	97.99% <0.00%> (+0.66%)	⬆️

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