build(deps): update ring requirement from 0.16.20 to 0.17.7

Updates the requirements on [ring](https://github.com/briansmith/ring) to permit the latest version.
- [Commits](https://github.com/briansmith/ring/commits)

---
updated-dependencies:
- dependency-name: ring
  dependency-type: direct:production
...

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

poem/Cargo.toml

@@ -149,7 +149,7 @@ fluent-langneg = { version = "0.13.0", optional = true }
 fluent-syntax = { version = "0.11.0", optional = true }
 unic-langid = { version = "0.9.0", optional = true, features = ["macros"] }
 intl-memoizer = { version = "0.5.1", optional = true }
-ring = { version = "0.16.20", optional = true }
+ring = { version = "0.17.7", optional = true }
 reqwest = { workspace = true, features = ["json"], optional = true }
 rcgen = { version = "0.11.1", optional = true }
 x509-parser = { version = "0.15.0", optional = true }