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 #50 into master will decrease coverage by 1.1%.
The diff coverage is n/a.

@@ Coverage Diff @@ ## master #50 +/- ## ============================================ - Coverage 63.16% 62.06% -1.11%  + Complexity 43 39 -4  ============================================ Files 6 6 Lines 448 427 -21 Branches 4 2 -2 ============================================ - Hits 283 265 -18  + Misses 162 159 -3  Partials 3 3

Impacted Files	Coverage Δ	Complexity Δ
...tub/GrpcRecaptchaEnterpriseServiceV1Beta1Stub.java	80.51% <0%> (-1.52%)	8% <0%> (-1%)
...RecaptchaEnterpriseServiceV1Beta1StubSettings.java	76.38% <0%> (-0.49%)	16% <0%> (-1%)
...beta1/RecaptchaEnterpriseServiceV1Beta1Client.java	28.98% <0%> (-0.75%)	9% <0%> (-2%)
...a1/stub/RecaptchaEnterpriseServiceV1Beta1Stub.java	11.11% <0%> (ø)	1% <0%> (ø)	⬇️

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