build(deps): bump digest from 0.11.0-rc.5 to 0.11.0-rc.7

Bumps [digest](https://github.com/RustCrypto/traits) from 0.11.0-rc.5 to 0.11.0-rc.7.
- [Commits](RustCrypto/traits@digest-v0.11.0-rc.5...digest-v0.11.0-rc.7)

---
updated-dependencies:
- dependency-name: digest
  dependency-version: 0.11.0-rc.7
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Cargo.lock

@@ -23,7 +23,7 @@ cipher = "0.5.0-rc.3"
 cmac = "0.8.0-rc.3"
 ctr = "0.10.0-rc.2"
 dbl = "0.5"
-digest = { version = "0.11.0-rc.4", features = ["mac"] }
+digest = { version = "0.11.0-rc.7", features = ["mac"] }
 
 # optional dependencies
 pmac = { version = "0.8.0-rc.3", optional = true }