Add genproto error troubleshoot step for manual bumps

[ArkaSaha30]

This PR will add the troubleshooting step in case of genproto errors while manual dependency bumps of grpc-* pacakges.

Sample error:

[0;31mFAIL: 'genproto' FAILED at Wed Jul 31 07:09:08 UTC 2024
make: *** [Makefile:134: verify-genproto] Error 255

Ref: #18384 (comment)

Please read https://github.com/etcd-io/etcd/blob/main/CONTRIBUTING.md#contribution-flow.

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Codecov Report

Attention: Patch coverage is 41.01796% with 197 lines in your changes missing coverage. Please review.

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Report is 177 commits behind head on main.

❗ Current head 81c02cc differs from pull request most recent head 58ec6b2

Please upload reports for the commit 58ec6b2 to get more accurate results.

Files	Patch %	Lines
client/v3/kubernetes/client.go	0.00%	91 Missing ⚠️
server/embed/config_logging.go	11.11%	23 Missing and 1 partial ⚠️
etcdctl/ctlv3/command/get_command.go	0.00%	18 Missing ⚠️
client/v3/maintenance.go	13.33%	13 Missing ⚠️
server/etcdserver/server.go	70.00%	6 Missing and 3 partials ⚠️
etcdctl/ctlv3/command/snapshot_command.go	0.00%	8 Missing ⚠️
client/v3/auth.go	66.66%	6 Missing ⚠️
client/v3/lease.go	40.00%	6 Missing ⚠️
pkg/cobrautl/help.go	76.47%	4 Missing ⚠️
server/embed/config.go	88.57%	2 Missing and 2 partials ⚠️
... and 7 more

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Additional details and impacted files

Files	Coverage Δ
client/v3/kv.go	94.44% <100.00%> (ø)
client/v3/txn.go	100.00% <100.00%> (ø)
client/v3/watch.go	93.83% <100.00%> (ø)
pkg/wait/wait_time.go	100.00% <ø> (ø)
server/auth/simple_token.go	88.46% <100.00%> (ø)
server/config/config.go	79.76% <ø> (ø)
server/embed/etcd.go	75.82% <100.00%> (ø)
server/etcdserver/api/v3rpc/health.go	57.69% <100.00%> (ø)
server/storage/mvcc/kvstore.go	90.44% <ø> (ø)
server/storage/mvcc/store.go	84.61% <100.00%> (ø)
... and 17 more

@@           Coverage Diff           @@
##             main   #18431   +/-   ##
=======================================
  Coverage        ?   68.90%           
=======================================
  Files           ?      420           
  Lines           ?    35475           
  Branches        ?        0           
=======================================
  Hits            ?    24444           
  Misses          ?     9609           
  Partials        ?     1422           

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[ahrtr]

LGTM

Thanks @ArkaSaha30

[jmhbnz]

Looks good, thanks @ArkaSaha30 - A few lint nitpicks if you have time.

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ahrtr, ArkaSaha30, jmhbnz, serathius

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