fix: retrying 13 INTERNAL RPC errors

[schmidt-sebastian]

Retrying INTERNAL errors for Idempotent calls should help address firebase/firebase-functions#536

[codecov]

Codecov Report

Merging #742 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #742   +/-   ##
=======================================
  Coverage   96.46%   96.46%           
=======================================
  Files          20       20           
  Lines        2236     2236           
  Branches      467      467           
=======================================
  Hits         2157     2157           
  Misses         24       24           
  Partials       55       55

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[alexander-fenster]

@schmidt-sebastian Note that this file is auto-generated. It's OK to try this change here to see if it helps, but the ground truth is https://github.com/googleapis/googleapis/blob/82809578652607c8ee29d9e199c21f28f81a03e0/google/firestore/v1/firestore_gapic.yaml#L41-L42 (and it, in turn, gets auto-synced from third_party internal folder, which is the real place where this change must be done).

[alexander-fenster]

(what I mean is that the change made here will disappear after synthtool run - I'm approving it if you'd like to test it out here fast, but we won't see it here for long :) )

[schmidt-sebastian]

@schmidt-sebastian Note that this file is auto-generated. It's OK to try this change here to see if it helps, but the ground truth is https://github.com/googleapis/googleapis/blob/82809578652607c8ee29d9e199c21f28f81a03e0/google/firestore/v1/firestore_gapic.yaml#L41-L42 (and it, in turn, gets auto-synced from third_party internal folder, which is the real place where this change must be done).

Which, in turn, is generated from https://cs.corp.google.com/piper///depot/google3/google/firestore/admin/v1/firestore_gapic.yaml :)
I will commit this and release this ASAP. Changing the main GAPIC file has to be coordinated with the backend, which I will take care of after.