Add swift-build to the rebranch and next schemes

Author: cmcgee1024

utils/update_checkout/update-checkout-config.json

@@ -341,6 +341,7 @@
                 "swift": "rebranch",
                 "cmark": "gfm",
                 "llbuild": "main",
+                "swift-build": "main",
                 "swift-toolchain-sqlite": "1.0.1",
                 "swift-tools-support-core": "main",
                 "swiftpm": "main",
@@ -398,6 +399,7 @@
                 "swift": "next",
                 "cmark": "gfm",
                 "llbuild": "main",
+                "swift-build": "main",
                 "swift-toolchain-sqlite": "1.0.1",
                 "swift-tools-support-core": "main",
                 "swiftpm": "main",