chore(deps): update protobuf packages to v3.11.1

[renovate-bot]

This PR contains the following updates:

Package	Update	Change
com.google.protobuf:protobuf-java	patch	3.11.0 -> 3.11.1
com.google.protobuf:protobuf-java-util	patch	3.11.0 -> 3.11.1

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[codecov]

Codecov Report

Merging #28 into master will increase coverage by 0.07%.
The diff coverage is n/a.

@@ Coverage Diff @@ ## master #28 +/- ## ============================================ + Coverage 71.22% 71.29% +0.07%  Complexity 981 981 ============================================ Files 62 62 Lines 5300 5310 +10 Branches 592 598 +6 ============================================ + Hits 3775 3786 +11  - Misses 1337 1338 +1  + Partials 188 186 -2

Impacted Files	Coverage Δ	Complexity Δ
...restore/collection/ImmutableSortedMapIterator.java	0% <0%> (ø)	0% <0%> (ø)	⬇️
...rc/main/java/com/google/cloud/firestore/Query.java	91.89% <0%> (+0.1%)	94% <0%> (ø)	⬇️
...rc/main/java/com/google/cloud/firestore/Watch.java	91.91% <0%> (+0.1%)	57% <0%> (ø)	⬇️
...a/com/google/cloud/firestore/FirestoreOptions.java	36.97% <0%> (+0.53%)	7% <0%> (ø)	⬇️
...oogle/cloud/firestore/v1/FirestoreAdminClient.java	59.84% <0%> (+1.57%)	38% <0%> (ø)	⬇️

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