Bump third_party/mbedtls/repo from ed179db to 3917028 (#23904)

Bumps [third_party/mbedtls/repo](https://github.com/ARMmbed/mbedtls) from `ed179db` to `3917028`.
- [Release notes](https://github.com/ARMmbed/mbedtls/releases)
- [Commits](Mbed-TLS/mbedtls@ed179db...3917028)

---
updated-dependencies:
- dependency-name: third_party/mbedtls/repo
  dependency-type: direct:production
...

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Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>