Bump base64 from 0.21.7 to 0.22.0

Bumps [base64](https://github.com/marshallpierce/rust-base64) from 0.21.7 to 0.22.0.
- [Changelog](https://github.com/marshallpierce/rust-base64/blob/master/RELEASE-NOTES.md)
- [Commits](marshallpierce/rust-base64@v0.21.7...v0.22.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

Cargo.toml

@@ -6,7 +6,7 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-base64 = "0.21.7"
+base64 = "0.22.0"
 pbkdf2 = { version = "0.12", default-features = false}
 hmac = { version = "0.12", default-features = false }
 sha1 = { version = "0.10", package = "sha-1", default-features = false }