chore(deps): update dependency apple/swift-docc-plugin to from: "1.4.2"

Author: renovate[bot]

Package.swift

@@ -10,7 +10,7 @@ let package = Package(
     dependencies: [
         .package(url: "https://github.com/tadija/AEXML.git", .upToNextMinor(from: "4.6.1")),
         .package(url: "https://github.com/kylef/PathKit.git", .upToNextMinor(from: "1.0.1")),
-        .package(url: "https://github.com/apple/swift-docc-plugin", from: "1.4.1"),
+        .package(url: "https://github.com/apple/swift-docc-plugin", from: "1.4.2"),
     ],
     targets: [
         .target(name: "XcodeProj",