chore: release 1.93.6

[release-please]

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

1.93.6 (2020-06-12)

Dependencies

• update dependency com.google.api:api-common to v1.9.1 (#221) (4df33f0)
• update dependency com.google.api:api-common to v1.9.2 (#229) (e8c1aa2)
• update dependency com.google.api:gax-bom to v1.57.0 (#236) (3d7d2a6)
• update dependency com.google.protobuf:protobuf-bom to v3.12.2 (#220) (815569d)
• update dependency io.grpc:grpc-bom to v1.30.0 (#233) (b41c34f)

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This PR was generated with Release Please.

[codecov]

Codecov Report

Merging #234 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #234   +/-   ##
=========================================
  Coverage     67.62%   67.62%           
  Complexity      384      384           
=========================================
  Files            36       36           
  Lines          1986     1986           
  Branches        269      269           
=========================================
  Hits           1343     1343           
  Misses          535      535           
  Partials        108      108           

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[yoshi-automation]

Release is at https://github.com/googleapis/java-core/releases/tag/v1.93.6