🌱 Bump envtest in Makefile to v1.31.0

[chrischdi]

What this PR does / why we need it:

Part of:

• Tasks to bump to Kubernetes v1.31 #10653

/area testing

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #

[chrischdi]

/test help

[k8s-ci-robot]

@chrischdi: The specified target(s) for /test were not found.
The following commands are available to trigger required jobs:

• /test pull-cluster-api-build-main
• /test pull-cluster-api-e2e-blocking-main
• /test pull-cluster-api-e2e-conformance-ci-latest-main
• /test pull-cluster-api-e2e-conformance-main
• /test pull-cluster-api-e2e-main
• /test pull-cluster-api-e2e-mink8s-main
• /test pull-cluster-api-e2e-upgrade-1-31-1-32-main
• /test pull-cluster-api-test-main
• /test pull-cluster-api-test-mink8s-main
• /test pull-cluster-api-verify-main

The following commands are available to trigger optional jobs:

• /test pull-cluster-api-apidiff-main

Use /test all to run the following jobs that were automatically triggered:

• pull-cluster-api-apidiff-main
• pull-cluster-api-build-main
• pull-cluster-api-e2e-blocking-main
• pull-cluster-api-test-main
• pull-cluster-api-verify-main

In response to this:

/test help

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-sigs/prow repository.

[chrischdi]

/test pull-cluster-api-e2e-conformance-ci-latest-main
/test pull-cluster-api-e2e-conformance-main
/test pull-cluster-api-e2e-main
/test pull-cluster-api-e2e-mink8s-main
/test pull-cluster-api-e2e-upgrade-1-31-1-32-main

Edit: whoops, they don't make sense for this PR 😂

[sbueringer]

/cherry-pick release-1.8

[k8s-infra-cherrypick-robot]

@sbueringer: once the present PR merges, I will cherry-pick it on top of release-1.8 in a new PR and assign it to you.

In response to this:

/cherry-pick release-1.8

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-sigs/prow repository.

[sbueringer]

/lgtm
/approve

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: a6da03bf85e2f59ec439e638456b7905c0f78089

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: sbueringer

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• OWNERS [sbueringer]

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[k8s-infra-cherrypick-robot]

@sbueringer: new pull request created: #11086

In response to this:

/cherry-pick release-1.8

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-sigs/prow repository.