fix(deps): update go.miloapis.com/service-catalog digest to b9c74bb

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
go.miloapis.com/service-catalog	require	digest	6a3cddd → b9c74bb

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[renovate]

⚠️ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

♻ Renovate will retry this branch, including artifacts, only when one of the following happens:

• any of the package files in this branch needs updating, or
• the branch becomes conflicted, or
• you click the rebase/retry checkbox if found above, or
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The artifact failure details are included below:

File name: go.sum

Command failed: go get -t ./...
go: go.miloapis.com/service-catalog@v0.3.2-0.20260724130110-b9c74bbaa8b0: verifying go.mod: go.miloapis.com/service-catalog@v0.3.2-0.20260724130110-b9c74bbaa8b0/go.mod: reading https://sum.golang.org/lookup/go.miloapis.com/service-catalog@v0.3.2-0.20260724130110-b9c74bbaa8b0: 500 Internal Server Error