Update regex requirement from 0.1.80 to 0.2.11 in /lightning

Updates the requirements on [regex](https://github.com/rust-lang/regex) to permit the latest version.
- [Release notes](https://github.com/rust-lang/regex/releases)
- [Changelog](https://github.com/rust-lang/regex/blob/master/CHANGELOG.md)
- [Commits](rust-lang/regex@0.1.80...0.2.11)

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

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

Author: dependabot[bot]

lightning/Cargo.toml

@@ -41,14 +41,14 @@ secp256k1 = { version = "0.20.2", default-features = false, features = ["alloc"]
 
 hashbrown = { version = "0.11", optional = true }
 hex = { version = "0.4", optional = true }
-regex = { version = "0.1.80", optional = true }
+regex = { version = "0.2.11", optional = true }
 backtrace = { version = "0.3", optional = true }
 
 core2 = { version = "0.3.0", optional = true, default-features = false }
 
 [dev-dependencies]
 hex = "0.4"
-regex = "0.1.80"
+regex = "0.2.11"
 # TODO remove this once rust-bitcoin PR #637 is released
 secp256k1 = { version = "0.20.2", default-features = false, features = ["alloc"] }