[release-4.22] OCPBUGS-101997: Bump golang.org/x/net to v0.53.0

[mariocr73]

What this PR does / why we need it:
Bumps golang.org/x/net from v0.48.0 to v0.53.0 to fix CVE-2026-33814 (GO-2026-4918), an infinite loop in the HTTP/2 transport triggered by a malformed SETTINGS_MAX_FRAME_SIZE frame. Reachable via keystone.NewKeystoneAuth -> http2.Transport. Verified with govulncheck before/after (no longer reported) and go build/go vet ./... clean across the whole repo.

Jira: OCPBUGS-101997

Special notes for reviewers:
go.mod's go directive stays at 1.25.5 (no toolchain bump). The vendor diff also includes mandatory transitive bumps (x/crypto, x/sys, x/term, x/text, and via x/text: x/tools/x/sync/x/mod) — required by x/net@v0.53.0's own
go.mod, not optional/unrelated churn.

[openshift-merge-bot]

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[openshift-ci-robot]

@mariocr73: This pull request references Jira Issue OCPBUGS-101997, which is invalid:

• expected Jira Issue OCPBUGS-101997 to depend on a bug targeting a version in 5.0.0 and in one of the following states: MODIFIED, ON_QA, VERIFIED, but no dependents were found

Comment /jira refresh to re-evaluate validity if changes to the Jira bug are made, or edit the title of this pull request to link to a different bug.

The bug has been updated to refer to the pull request using the external bug tracker.

Details

In response to this:

What this PR does / why we need it:
Bumps golang.org/x/net from v0.48.0 to v0.53.0 to fix CVE-2026-33814 (GO-2026-4918), an infinite loop in the HTTP/2 transport triggered by a malformed SETTINGS_MAX_FRAME_SIZE frame. Reachable via keystone.NewKeystoneAuth -> http2.Transport. Verified with govulncheck before/after (no longer reported) and go build/go vet ./... clean across the whole repo.

Jira: OCPBUGS-101997

Special notes for reviewers:
go.mod's go directive stays at 1.25.5 (no toolchain bump). The vendor diff also includes mandatory transitive bumps (x/crypto, x/sys, x/term, x/text, and via x/text: x/tools/x/sync/x/mod) — required by x/net@v0.53.0's own
go.mod, not optional/unrelated churn.

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[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: mariocr73
Once this PR has been reviewed and has the lgtm label, please assign jsafrane for approval. For more information see the Code Review Process.

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[openshift-ci]

@mariocr73: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/security	88af41d	link	false	/test security

Full PR test history. Your PR dashboard.

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