[skip ci] Increase the number of shards for Cortex-M from 4 to 8.

[gigiblender]

After #11809, the CI time for Cortex-M shards increased to around 2.5 hours. This PR Increases the number of shards for Cortex-M from 4 to 8.

#12333.

@mehrdadh

cc @Mousius @areusch @driazati

[github-actions]

Built docs for commit bb7996a can be found here.

[Mousius]

@gigiblender do we know why this failed with the jobs being terminated?

[gigiblender]

@gigiblender, do we know why this failed with the jobs being terminated?

Seems to me the CI times out. #11809 adds more tests to the Cortex-M shards.

[Mousius]

@gigiblender, do we know why this failed with the jobs being terminated?

Seems to me the CI times out. #11809 adds more tests to the Cortex-M shards.

Do we need to increase the shards further rather than skipping CI here to prevent the timeouts?

[gigiblender]

@gigiblender, do we know why this failed with the jobs being terminated?

Seems to me the CI times out. #11809 adds more tests to the Cortex-M shards.

Do we need to increase the shards further rather than skipping CI here to prevent the timeouts?

The CI will not run with the updated Jenkinsfile. It still uses 4 shards.

[Mousius]

@gigiblender, do we know why this failed with the jobs being terminated?

Seems to me the CI times out. #11809 adds more tests to the Cortex-M shards.

Do we need to increase the shards further rather than skipping CI here to prevent the timeouts?

The CI will not run with the updated Jenkinsfile. It still uses 4 shards.

Haha, my bad, thanks for the reminder 😸