Downgrade skaffold to v2.9.0

[dimityrmirchev]

How to categorize this PR?

/area dev-productivity
/kind regression

What this PR does / why we need it:
After #9237 and the upgrade of skaffold to v2.10.1 the local kind setup is not working as expected when changes are made to the codebase. This PR reverts the skaffold version.

To reproduce:

make kind-up
make gardener-up

Do a change to some code used in gardenlet (for example). Run make gardener-up again. I expect that the gardenlet image is rebuilt and deployed, but the output says

europe-docker.pkg.dev/gardener-project/releases/gardener/gardenlet: Found. Tagging

Which issue(s) this PR fixes:
Fixes #

Special notes for your reviewer:

cc @ialidzhikov
Release note:

The skaffold version is downgraded from v2.10.1 to v2.9.0 to fix an issue with skaffold not detecting code changes on `make gardener-up`.

[ialidzhikov]

/lgtm

I am able to reproduce the issue with skaffold@v2.10.1 and confirm that it does not exist with skaffold@v2.9.0

[gardener-prow]

LGTM label has been added.

Git tree hash: b3d73068a9003f9b5810a8a1fc8da3cdb12012d8

[gardener-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ialidzhikov

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[oliver-goetz]

A fix seems to be merged already GoogleContainerTools/skaffold#9313, but there is no patch release which includes the fix yet.

[ialidzhikov]

A fix seems to be merged already GoogleContainerTools/skaffold#9313, but there is no patch release which includes the fix yet.

Ah, thanks. I was about to open a new issue and I spent the last hour preparing a dummy project and reproducing the issue there...

[ialidzhikov]

/cherry-pick release-v1.90

[gardener-ci-robot]

@ialidzhikov: once the present PR merges, I will cherry-pick it on top of release-v1.90 in a new PR and assign it to you.

In response to this:

/cherry-pick release-v1.90

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[ialidzhikov]

#9327 (comment): as the skaffold version is used by several extensions (such as registry-cache, shoot-rsyslog-relp, and others).

[gardener-ci-robot]

@ialidzhikov: new pull request created: #9328

In response to this:

/cherry-pick release-v1.90

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.