[github-actions] limit "upload coverage" job to openthread repo

[abtink]

This commit updates the GitHub Action workflows to skip the "upload-coverage" job when target repo is a fork of openthread.

[size-report]

Size Report of OpenThread

Merging #10136 into main(0c6c2fe).

name	branch	text	data	bss	total
ot-cli-ftd	main	466840	856	66364	534060
	#10136	466840	856	66364	534060
	+/-	0	0	0	0
ot-ncp-ftd	main	435756	760	61576	498092
	#10136	435756	760	61576	498092
	+/-	0	0	0	0
libopenthread-ftd.a	main	235928	95	40310	276333
	#10136	235928	95	40310	276333
	+/-	0	0	0	0
libopenthread-cli-ftd.a	main	57545	0	8075	65620
	#10136	57545	0	8075	65620
	+/-	0	0	0	0
libopenthread-ncp-ftd.a	main	31863	0	5916	37779
	#10136	31863	0	5916	37779
	+/-	0	0	0	0
ot-cli-mtd	main	364504	760	51220	416484
	#10136	364504	760	51220	416484
	+/-	0	0	0	0
ot-ncp-mtd	main	347036	760	46448	394244
	#10136	347036	760	46448	394244
	+/-	0	0	0	0
libopenthread-mtd.a	main	157999	0	25182	183181
	#10136	157999	0	25182	183181
	+/-	0	0	0	0
libopenthread-cli-mtd.a	main	39787	0	8059	47846
	#10136	39787	0	8059	47846
	+/-	0	0	0	0
libopenthread-ncp-mtd.a	main	24743	0	5916	30659
	#10136	24743	0	5916	30659
	+/-	0	0	0	0
ot-cli-ftd-br	main	549976	864	131212	682052
	#10136	549976	864	131212	682052
	+/-	0	0	0	0
libopenthread-ftd-br.a	main	324242	100	105134	429476
	#10136	324242	100	105134	429476
	+/-	0	0	0	0
libopenthread-cli-ftd-br.a	main	71208	0	8099	79307
	#10136	71208	0	8099	79307
	+/-	0	0	0	0
ot-rcp	main	62248	564	20604	83416
	#10136	62248	564	20604	83416
	+/-	0	0	0	0
libopenthread-rcp.a	main	9542	0	5052	14594
	#10136	9542	0	5052	14594
	+/-	0	0	0	0
libopenthread-radio.a	main	18870	0	214	19084
	#10136	18870	0	214	19084
	+/-	0	0	0	0

[jwhui]

I think we want to upload coverage on pushes to main branch. Can we instead limit to the specific github repo?

github.repository == 'openthread/openthread'

[abtink]

Updated in new push to use this condition.

[bukepo]

It seems the code coverage report has been missing for a while. Is this PR fixing the issue?

[abtink]

It seems the code coverage report has been missing for a while. Is this PR fixing the issue?

No, not directly. Though it might help indirectly. It prevents the "update coverage" step from running on forks of the OT repo, limiting it to the main repo. This should reduce traffic to the underlying Coverity server, which could potentially improve its performance and responsiveness.

[jwhui]

It seems the code coverage report has been missing for a while. Is this PR fixing the issue?

It appears Codecov has errors processing coverage reports. For example:
https://app.codecov.io/gh/openthread/openthread/commit/acacdbff85e766403a1886c8b02b3c25a823a680