Merge branch 'main' into parser-library

Author: DougGregor

Package.swift

@@ -172,13 +172,4 @@ if ProcessInfo.processInfo.environment["SWIFTCI_USE_LOCAL_DEPS"] == nil {
   package.dependencies += [
     .package(path: "../swift-argument-parser")
   ]
-}
-
-#if swift(>=5.6)
-// If `SWIFTCI_USE_LOCAL_DEPS` is set, we are in a CI enviornment that might disallow
-// internet access, so we can't load swift-docc-plugin. Simply don't load it in these
-// environments because we don't build docc in CI at the moment.
-if ProcessInfo.processInfo.environment["SWIFTCI_USE_LOCAL_DEPS"] == nil {
-    package.dependencies.append(.package(url: "https://github.com/apple/swift-docc-plugin", from: "1.0.0"))
-}
-#endif
+}