Bump Nimble to 14.x (#1)

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: RISCfuture

Package.resolved

@@ -17,7 +17,7 @@ let package = Package(
   dependencies: [
     .package(url: "https://github.com/weichsel/ZIPFoundation.git", from: "0.9.19"),
     .package(url: "https://github.com/Quick/Quick.git", from: "7.6.2"),
-    .package(url: "https://github.com/Quick/Nimble.git", from: "13.7.1"),
+    .package(url: "https://github.com/Quick/Nimble.git", from: "14.0.0"),
     .package(url: "https://github.com/swiftlang/swift-docc-plugin.git", from: "1.4.3"),
     .package(url: "https://github.com/apple/swift-argument-parser.git", from: "1.5.0"),
     .package(url: "https://github.com/RISCfuture/StreamingCSV.git", from: "2.0.0")