fix(deps): update go.starlark.net digest to 6dd8f16

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
go.starlark.net	require	digest	5395d01 → 6dd8f16

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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
• you rename this PR's title to start with "rebase!" to trigger it manually

The artifact failure details are included below:

File name: go.sum

Command failed: go get -t ./...
go: github.com/iodesystems/agentkit@v0.0.0 (replaced by ../agentkit): reading ../agentkit/go.mod: open /tmp/renovate/repos/github/IodeSystems/agentkit/go.mod: no such file or directory