chore: release 4.11.1

[release-please]

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

4.11.1 (2021-05-13)

Bug Fixes

• deps: require google-gax v2.12.0 (#1497) (a8d5f0b)

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[codecov]

Codecov Report

Merging #1498 (3cd19c4) into master (685e75c) will increase coverage by 0.32%.
The diff coverage is 99.02%.

❗ Current head 3cd19c4 differs from pull request most recent head f92e759. Consider uploading reports for the commit f92e759 to get more accurate results

@@            Coverage Diff             @@
##           master    #1498      +/-   ##
==========================================
+ Coverage   98.20%   98.52%   +0.32%     
==========================================
  Files          32       33       +1     
  Lines       19502    20382     +880     
  Branches     1363     1328      -35     
==========================================
+ Hits        19152    20082     +930     
+ Misses        346      295      -51     
- Partials        4        5       +1     

Impacted Files	Coverage Δ
dev/src/recursive-delete.ts	98.40% <98.40%> (ø)
dev/src/v1beta1/firestore_client.ts	97.93% <98.85%> (+0.19%)	⬆️
dev/src/backoff.ts	98.29% <100.00%> (ø)
dev/src/bulk-writer.ts	100.00% <100.00%> (ø)
dev/src/index.ts	97.67% <100.00%> (+2.22%)	⬆️
dev/src/query-partition.ts	100.00% <100.00%> (ø)
dev/src/rate-limiter.ts	98.85% <100.00%> (ø)
dev/src/reference.ts	99.89% <100.00%> (+0.68%)	⬆️
dev/src/timestamp.ts	100.00% <100.00%> (ø)
... and 2 more

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[yoshi-automation]

Release is at https://github.com/googleapis/nodejs-firestore/releases/tag/v4.11.1

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