chore(master): release 1.2.12

[release-please]

🤖 I have created a release *beep* *boop*

1.2.12 (2021-02-22)

Documentation

• generate sample code in the Java microgenerator (821c8f9)

Dependencies

• update dependency com.google.cloud:google-cloud-shared-dependencies to v0.19.0 (#422) (15d0541)

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[codecov]

Codecov Report

Merging #421 (3672e51) into master (d70c57f) will increase coverage by 0.36%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master     #421      +/-   ##
============================================
+ Coverage     70.20%   70.56%   +0.36%     
  Complexity       80       80              
============================================
  Files            12       12              
  Lines           547      547              
  Branches          4        4              
============================================
+ Hits            384      386       +2     
+ Misses          158      157       -1     
+ Partials          5        4       -1     

Impacted Files	Coverage Δ	Complexity Δ
.../cloud/trace/v1/stub/TraceServiceStubSettings.java	79.13% <0.00%> (+0.86%)	13.00% <0.00%> (ø%)
.../com/google/cloud/trace/v2/TraceServiceClient.java	57.89% <0.00%> (+2.63%)	11.00% <0.00%> (ø%)

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[yoshi-automation]

🤖 Release is at https://github.com/googleapis/java-trace/releases/tag/v1.2.12 🌻

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[release-tool-publish-reporter]

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