fix(examples): replace local tarball path with latest in use-agent example

[basilalshukaili]

Problem

The @inngest/agent-kit dependency in examples/use-agent/package.json was accidentally committed pointing to an absolute path on the original developer local machine:

file:/Users/tedwerbel/Documents/code/agent-kit/packages/agent-kit/inngest-agent-kit-0.13.2.tgz

This breaks npm/pnpm install for anyone cloning the repo.

Fix

Replace the local file path with latest, matching the convention in other examples (quick-start, demo, etc.).

Also update the pnpm-lock.yaml specifier which had the same absolute path.

Closes #316

[changeset-bot]

⚠️ No Changeset found

Latest commit: c6748b3

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[basilalshukaili]

No changeset is included because this PR only touches examples/use-agent/ (its package.json + lockfile), replacing a leftover local tarball path with latest. The examples/ directory is not part of the pnpm workspace — pnpm-workspace.yaml lists only packages/* and docs — so no package version is bumped by this change. The changeset-bot warning is a false positive for examples-only fixes. Happy to add an empty changeset if you would prefer the check to pass explicitly.