chore(deps): bump base64 from 0.13.1 to 0.20.0 (#250)

Bumps [base64](https://github.com/marshallpierce/rust-base64) from 0.13.1 to 0.20.0.
- [Release notes](https://github.com/marshallpierce/rust-base64/releases)
- [Changelog](https://github.com/marshallpierce/rust-base64/blob/master/RELEASE-NOTES.md)
- [Commits](marshallpierce/rust-base64@v0.13.1...v0.20.0)

---
updated-dependencies:
- dependency-name: base64
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

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

Author: dependabot[bot]

Cargo.lock

@@ -27,7 +27,7 @@ env_logger = "0.10"
 parking_lot = "0.12.1"
 hmac = "0.12"
 sha2 = "0.10"
-base64 = "0.13"
+base64 = "0.20"
 stringprep = "0.1"
 tokio-rustls = "0.23"
 rustls-pemfile = "1"