deps: bump the major group across 1 directory with 2 updates

Bumps the major group with 2 updates in the / directory: [base64](https://github.com/marshallpierce/rust-base64) and [ed25519-dalek](https://github.com/dalek-cryptography/curve25519-dalek).


Updates `base64` from 0.22.1 to 0.23.1
- [Changelog](https://github.com/marshallpierce/rust-base64/blob/master/RELEASE-NOTES.md)
- [Commits](marshallpierce/rust-base64@v0.22.1...v0.23.1)

Updates `ed25519-dalek` from 2.2.0 to 3.0.0
- [Release notes](https://github.com/dalek-cryptography/curve25519-dalek/releases)
- [Changelog](https://github.com/dalek-cryptography/curve25519-dalek/blob/3.0.0/CHANGELOG.md)
- [Commits](dalek-cryptography/curve25519-dalek@ed25519-2.2.0...3.0.0)

---
updated-dependencies:
- dependency-name: base64
  dependency-version: 0.23.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: major
- dependency-name: ed25519-dalek
  dependency-version: 3.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: major
...

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

Author: dependabot[bot]

Cargo.lock

@@ -11,7 +11,7 @@ path = "src/main.rs"
 axum = "0.8"
 tokio = { version = "1", features = ["full"] }
 sha2 = "0.11"
-base64 = "0.22"
+base64 = "0.23"
 log = "0.4"
 env_logger = "0.11"
 thiserror = "2"
@@ -38,7 +38,7 @@ embed-resource = "3"
 [dev-dependencies]
 reqwest = { version = "0.13", features = ["blocking"] }
 tempfile = "3"
-ed25519-dalek = { version = "2", features = ["rand_core"] }
+ed25519-dalek = { version = "3", features = ["rand_core"] }
 rsa = "0.9"
 ssh-key = { version = "0.6", features = ["ed25519", "rsa", "std"] }
 rand_core = { version = "0.6", features = ["getrandom"] }