chore: release 1.2.1

[release-please]

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

1.2.1 (2020-10-08)

Dependencies

• update dependency com.google.cloud:google-cloud-shared-dependencies to v0.10.2 (#271) (6cc131e)

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This PR was generated with Release Please.

[yoshi-approver]

Rubber stamped release!

[codecov]

Codecov Report

Merging #274 into master will decrease coverage by 1.16%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master     #274      +/-   ##
============================================
- Coverage     72.65%   71.49%   -1.17%     
  Complexity      226      226              
============================================
  Files            19       19              
  Lines          1719     1719              
  Branches         27       27              
============================================
- Hits           1249     1229      -20     
  Misses          433      433              
- Partials         37       57      +20     

Impacted Files	Coverage Δ	Complexity Δ
.../containeranalysis/v1/ContainerAnalysisClient.java	42.25% <0.00%> (-5.64%)	19.00% <0.00%> (ø%)
...alysis/v1beta1/ContainerAnalysisV1Beta1Client.java	53.39% <0.00%> (-4.86%)	27.00% <0.00%> (ø%)
...ontaineranalysis/v1beta1/GrafeasV1Beta1Client.java	56.50% <0.00%> (-4.48%)	63.00% <0.00%> (ø%)

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[yoshi-automation]

Release is at https://github.com/googleapis/java-containeranalysis/releases/tag/v1.2.1

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