Bump rustls-webpki from 0.101.1 to 0.101.4 in /avanguard

Bumps [rustls-webpki](https://github.com/rustls/webpki) from 0.101.1 to 0.101.4.
- [Release notes](https://github.com/rustls/webpki/releases)
- [Commits](rustls/webpki@v/0.101.1...v/0.101.4)

---
updated-dependencies:
- dependency-name: rustls-webpki
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <[email protected]>