<issue_start><issue_comment>Title: could not construct Shoot client: unsupported kubernetes version \"v1.19.4\"
username_0: Checking the logs from a `conformance-testgrid-parallel` step execution, I am able to find events from the Seed but I think the Shoot related events are not being fetched because of `could not construct Shoot client: unsupported kubernetes version \"v1.19.4\"`:


```
time="2020-11-16T18:04:33Z" level=info msg="[SEED foo] [NAMESPACE shoot--it--tmau7-mxu] [EXTENSIONS] [OS]"
2020-11-16 20:04:33	
time="2020-11-16T18:04:33Z" level=info msg="[SEED foo] [NAMESPACE shoot--it--tmau7-mxu] [EXTENSIONS] [CONTROLPLANE]"
2020-11-16 20:04:33	
time="2020-11-16T18:04:33Z" level=info msg="[SEED foo] [NAMESPACE shoot--it--tmau7-mxu] [EXTENSIONS] [INFRASTRUCTURE]"
2020-11-16 20:04:33	
time="2020-11-16T18:04:33Z" level=info msg="[SEED foo]"
2020-11-16 20:04:33	
time="2020-11-16T18:04:33Z" level=error msg="retry failed with context deadline exceeded, last error: could not construct Shoot client: unsupported kubernetes version \"v1.19.4\""
2020-11-16 19:59:33	
time="2020-11-16T17:59:33Z" level=error msg="<nil>"
2020-11-16 19:59:33	
time="2020-11-16T17:59:33Z" level=info msg="END: dump kubetest stdout last 5000 bytes"
2020-11-16 19:59:33	
time="2020-11-16T17:59:33Z" level=info msg=" Test Suite Failed"
2020-11-16 19:59:33	
time="2020-11-16T17:59:33Z" level=info msg=" Ginkgo ran 1 suite in 1m40.92987864s"
time="2020-11-16T17:59:33Z" level=info msg=" "
2020-11-16 19:59:33	
time="2020-11-16T17:59:33Z" level=info msg=" FAIL! -- 4 Passed | 1 Failed | 0 Pending | 5229 Skipped"
2020-11-16 19:59:33	
time="2020-11-16T17:59:33Z" level=info msg=" Ran 5 of 5234 Specs in 89.982 seconds"
```

I believe the `github.com/gardener/gardener` dependency needs to be updated to include https://github.com/gardener/gardener/pull/2799/commits/8076764137d471e99f28d7b34aaa24332015692a.
<issue_comment>username_1: cc @dguendisch
<issue_comment>username_2: is fixed with https://github.com/gardener/test-infra/pull/332<issue_closed>