chore(deps): update dependency com.google.cloud:libraries-bom to v13.4.0

[renovate-bot]

This PR contains the following updates:

Package	Update	Change
com.google.cloud:libraries-bom	minor	13.2.0 -> 13.4.0

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[codecov]

Codecov Report

Merging #267 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #267   +/-   ##
=========================================
  Coverage     71.71%   71.71%           
  Complexity      496      496           
=========================================
  Files            29       29           
  Lines          1658     1658           
  Branches        268      268           
=========================================
  Hits           1189     1189           
  Misses          344      344           
  Partials        125      125           

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