build(deps): bump base64 from 0.21.7 to 0.22.1

Bumps [base64](https://github.com/marshallpierce/rust-base64) from 0.21.7 to 0.22.1.
- [Changelog](https://github.com/marshallpierce/rust-base64/blob/master/RELEASE-NOTES.md)
- [Commits](marshallpierce/rust-base64@v0.21.7...v0.22.1)

---
updated-dependencies:
- dependency-name: base64
  dependency-version: 0.22.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Cargo.lock

@@ -5,7 +5,7 @@ edition.workspace = true
 
 [dependencies]
 alloy = { workspace = true }
-base64 = "=0.21.7"
+base64 = "=0.22.1"
 anyhow = "1.0"
 async-trait = { workspace = true }
 async-stream = "0.3"