Bump aes-gcm from 0.10.1 to 0.10.3 in /rs (#317)

Bumps [aes-gcm](https://github.com/RustCrypto/AEADs) from 0.10.1 to 0.10.3.
- [Commits](RustCrypto/AEADs@aes-gcm-v0.10.1...aes-gcm-v0.10.3)

---
updated-dependencies:
- dependency-name: aes-gcm
  dependency-type: indirect
...

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