fix(deps): update istio.io/istio digest to 4fd6c8e

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
istio.io/istio	require	digest	738d879 -> 4fd6c8e

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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 -d -t ./...
go: -d flag is deprecated. -d=true is a no-op
go: github.com/imdario/[email protected]: parsing go.mod:
	module declares its path as: dario.cat/mergo
	        but was required as: github.com/imdario/mergo