Update codecov/codecov-action digest to fb8b358

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
codecov/codecov-action	action	digest	e79a696 → fb8b358

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ All tests successful. No failed tests found.

❗ There is a different number of reports uploaded between BASE (35e8171) and HEAD (1b17380). Click for more details.

HEAD has 2 uploads less than BASE

Flag	BASE (35e8171)	HEAD (1b17380)
grpc	1	0
emulator	1	0

@@              Coverage Diff              @@
##                8.x    #1100       +/-   ##
=============================================
- Coverage     67.72%   40.10%   -27.62%     
  Complexity     1486     1486               
=============================================
  Files           146      146               
  Lines          4189     4174       -15     
=============================================
- Hits           2837     1674     -1163     
- Misses         1352     2500     +1148