build(deps): update github.com/planetscale/vtprotobuf digest to 71c992b

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
github.com/planetscale/vtprotobuf	require	digest	0393e58 -> 71c992b

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[alwaysmeticulous]

✅ Meticulous spotted zero visual differences across 542 screens tested: view results.

_{Expected differences? Click here. Last updated for commit cee9957. This comment will update as new commits are pushed.}