Temporarily switch to go-licenses fork

[inteon]

Temporarily switch to fork that contains these changes: google/go-licenses#327

Should fix cert-manager/cert-manager#6622

[erikgb]

/lgtm
/approve

[cert-manager-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: erikgb

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[wallrj]

It's still really flaky.

Here's an example:

• https://prow.infra.cert-manager.io/view/gs/cert-manager-prow-artifacts/pr-logs/pull/cert-manager_cert-manager/7752/pull-cert-manager-master-make-verify/1929984824819322880

...
W0603 19:35:38.130919    3172 report.go:128] Error discovering license URL: getting file URL in library github.com/blang/semver/v4: source.ModuleInfo(ctx, "github.com/blang/semver/v4", "v4.0.0"): doURL(ctx, client, "HEAD", "https://github.com/blang/semver/raw/v4.0.0/v4/go.mod"): Head "https://github.com/blang/semver/raw/v4.0.0/v4/go.mod": context deadline exceeded
W0603 19:35:38.409510    3172 report.go:128] Error discovering license URL: getting file URL in library sigs.k8s.io/structured-merge-diff/v4: source.ModuleInfo(ctx, "sigs.k8s.io/structured-merge-diff/v4", "v4.5.0"): doURL(ctx, client, "HEAD", "https://github.com/kubernetes-sigs/structured-merge-diff/raw/v4.5.0/v4/go.mod"): Head "https://github.com/kubernetes-sigs/structured-merge-diff/raw/v4.5.0/v4/go.mod": net/http: request canceled (Client.Timeout exceeded while awaiting headers)
W0603 19:35:38.410496    3172 report.go:128] Error discovering license URL: getting file URL in library k8s.io/klog/v2: source.ModuleInfo(ctx, "k8s.io/klog/v2", "v2.130.1"): doURL(ctx, client, "HEAD", "https://github.com/kubernetes/klog/raw/v2.130.1/v2/go.mod"): Head "https://github.com/kubernetes/klog/raw/v2.130.1/v2/go.mod": net/http: request canceled (Client.Timeout exceeded while awaiting headers)
make[2]: Leaving directory '/tmp/verify.sh.Hqt41uV9'
make[1]: Leaving directory '/tmp/verify.sh.Hqt41uV9'
diff '--exclude=.git' '--exclude=_bin' --new-file --unified --show-c-function --recursive /home/prow/go/src/github.com/cert-manager/cert-manager/test/e2e/LICENSES /tmp/verify.sh.Hqt41uV9/test/e2e/LICENSES
--- /home/prow/go/src/github.com/cert-manager/cert-manager/test/e2e/LICENSES	2025-06-03 19:33:51.020116459 +0000
+++ /tmp/verify.sh.Hqt41uV9/test/e2e/LICENSES	2025-06-03 19:35:38.410258635 +0000
@@ -1,16 +1,16 @@
 github.com/Azure/go-ntlmssp,https://github.com/Azure/go-ntlmssp/blob/754e69321358/LICENSE,MIT
 github.com/beorn7/perks/quantile,https://github.com/beorn7/perks/blob/v1.0.1/LICENSE,MIT
-github.com/blang/semver/v4,https://github.com/blang/semver/blob/v4.0.0/v4/LICENSE,MIT
+github.com/blang/semver/v4,Unknown,MIT
...