deps: update dependency com.google.protobuf:protobuf-bom to v3.11.4

[renovate-bot]

This PR contains the following updates:

Package	Update	Change
com.google.protobuf:protobuf-bom (source)	patch	3.11.3 -> 3.11.4

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Release Notes

protocolbuffers/protobuf

v3.11.4

Compare Source

C#

• Fix latest ArgumentException for C# extensions (#​7188)
• Enforce recursion depth checking for unknown fields (#​7210)

Ruby

• Fix wrappers with a zero value (#​7195)
• Fix JSON serialization of 0/empty-valued wrapper types (#​7198)

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[codecov]

Codecov Report

Merging #134 into master will decrease coverage by 0.11%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master     #134      +/-   ##
============================================
- Coverage     63.77%   63.65%   -0.12%     
  Complexity      540      540              
============================================
  Files            30       30              
  Lines          4745     4735      -10     
  Branches        456      441      -15     
============================================
- Hits           3026     3014      -12     
+ Misses         1564     1562       -2     
- Partials        155      159       +4

Impacted Files	Coverage Δ	Complexity Δ
...in/java/com/google/cloud/storage/StorageBatch.java	88% <0%> (-4%)	13% <0%> (ø)
...main/java/com/google/cloud/storage/BucketInfo.java	80.71% <0%> (-0.34%)	84% <0%> (ø)
...ain/java/com/google/cloud/storage/StorageImpl.java	78.67% <0%> (-0.12%)	120% <0%> (ø)
...om/google/cloud/storage/spi/v1/HttpStorageRpc.java	1.64% <0%> (ø)	1% <0%> (ø)	⬇️

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