build(deps): bump tailscale.com from 1.86.2 to 1.86.4 (#1001)

Bumps [tailscale.com](https://github.com/tailscale/tailscale) from 1.86.2 to 1.86.4.
- [Release notes](https://github.com/tailscale/tailscale/releases)
- [Commits](https://github.com/tailscale/tailscale/compare/v1.86.2...v1.86.4)

---
updated-dependencies:
- dependency-name: tailscale.com
dependency-version: 1.86.4
dependency-type: direct:production
update-type: version-update:semver-patch
...

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