remove webhook from coverage report

[balopat]

No description provided.

[codecov-io]

Codecov Report

Merging #2236 into master will increase coverage by 1.12%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2236      +/-   ##
==========================================
+ Coverage   58.85%   59.98%   +1.12%     
==========================================
  Files         191      185       -6     
  Lines        7979     7794     -185     
==========================================
- Hits         4696     4675      -21     
+ Misses       2896     2732     -164     
  Partials      387      387

Impacted Files	Coverage Δ
pkg/skaffold/jib/jib.go	76.34% <0%> (-2.16%)	⬇️
pkg/skaffold/docker/client.go	69.6% <0%> (-1.97%)	⬇️
pkg/webhook/labels/labels.go
pkg/webhook/kubernetes/deployment.go
pkg/webhook/kubernetes/service.go
pkg/webhook/github/github.go
pkg/webhook/gcs/gcs.go
pkg/webhook/kubernetes/cleanup.go

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