build: pin Swift/COM at the same point as the CMake build

Ensure that the CMake and SPM builds are at the same point.  If the user
does not initialize the submodules, we would fail to build as the
resolution would pick a different point for Swift/COM.

Author: compnerd

Package.swift

@@ -18,7 +18,7 @@ let SwiftWin32 = Package(
              .branch("main")),
     .package(url: "https://github.com/compnerd/cassowary.git", .branch("main")),
     .package(name: "SwiftCOM", url: "https://github.com/compnerd/swift-com.git",
-             .branch("main")),
+             .revision("ebbc617d3b7ba3a2023988a74bebd118deea4cc5")),
   ],
   targets: [
     .target(