Closes #2240 - Update dependant package versions to match branch versions

* Update the dependant packages to 'release/6.2.1'

Author: kcieplak

Package.swift

@@ -800,7 +800,7 @@ var dependencies: [Package.Dependency] {
       .package(path: "../swift-crypto"),
     ] + swiftPMDependency([.package(name: "swift-package-manager", path: "../swiftpm")])
   } else {
-    let relatedDependenciesBranch = "release/6.2"
+    let relatedDependenciesBranch = "release/6.2.1" 
 
     return [
       .package(url: "https://github.com/swiftlang/indexstore-db.git", branch: relatedDependenciesBranch),