deps: update dependency com.google.protobuf:protobuf-java to v3.11.3

[renovate-bot]

This PR contains the following updates:

Package	Update	Change
com.google.protobuf:protobuf-java	patch	3.11.1 -> 3.11.3

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[codecov]

Codecov Report

Merging #40 into master will decrease coverage by 0.23%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##             master     #40      +/-   ##
===========================================
- Coverage      7.86%   7.62%   -0.24%     
+ Complexity      389     374      -15     
===========================================
  Files            85      85              
  Lines         28498   28328     -170     
  Branches       4900    4863      -37     
===========================================
- Hits           2241    2161      -80     
+ Misses        25977   25901      -76     
+ Partials        280     266      -14

Impacted Files	Coverage Δ	Complexity Δ
src/main/java/io/grafeas/v1/Attestation.java	82.35% <0%> (-1.86%)	2% <0%> (ø)
src/main/java/io/grafeas/v1/Build.java	78.57% <0%> (-1.43%)	2% <0%> (ø)
src/main/java/io/grafeas/v1/Deployment.java	78.57% <0%> (-1.43%)	2% <0%> (ø)
src/main/java/io/grafeas/v1/Image.java	81.25% <0%> (-1.11%)	2% <0%> (ø)
src/main/java/io/grafeas/v1/Package.java	83.33% <0%> (-0.88%)	2% <0%> (ø)
src/main/java/io/grafeas/v1/Discovery.java	83.33% <0%> (-0.88%)	2% <0%> (ø)
src/main/java/io/grafeas/v1/GrafeasGrpc.java	66.35% <0%> (-0.87%)	30% <0%> (ø)
src/main/java/io/grafeas/v1/Upgrade.java	88.46% <0%> (-0.83%)	2% <0%> (ø)
src/main/java/io/grafeas/v1/Provenance.java	93.33% <0%> (-0.55%)	2% <0%> (ø)
src/main/java/io/grafeas/v1/GrafeasOuterClass.java	96.8% <0%> (-0.54%)	2% <0%> (ø)
... and 64 more

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