build(deps): update github.com/google/pprof digest to 29b9bb0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
github.com/google/pprof	require	digest	868f304 -> 29b9bb0

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[alwaysmeticulous]

✅ Meticulous spotted zero visual differences across 408 screens tested: view results.

_{Last updated for commit 257afe8. This comment will update as new commits are pushed.}