Committed the generated OpenAPI sources instead of using the plugin.

Package.swift

@@ -12,6 +12,7 @@
 //
 //===----------------------------------------------------------------------===
 
+import class Foundation.ProcessInfo
 import PackageDescription
 
 let package = Package(
@@ -30,10 +31,9 @@ let package = Package(
         ),
     ],
     dependencies: [
-        .package(url: "https://github.com/apple/swift-openapi-generator.git", exact: "1.11.0"),
-        .package(url: "https://github.com/apple/swift-openapi-runtime", from: "1.5.0"),
-        .package(url: "https://github.com/apple/swift-openapi-urlsession", from: "1.0.2"),
-        .package(url: "https://github.com/swiftlang/swift-docc-plugin", from: "1.1.0")
+        // Must be at least the runtime version required by the generator in `Tools`.
+        .package(url: "https://github.com/apple/swift-openapi-runtime", from: "1.11.0"),
+        .package(url: "https://github.com/apple/swift-openapi-urlsession", from: "1.0.2")
     ],
     targets: [
         .target(
@@ -43,8 +43,9 @@ let package = Package(
                 .product(name: "OpenAPIURLSession", package: "swift-openapi-urlsession")
             ],
             path: "Sources/ASConnectService",
-            plugins: [
-                .plugin(name: "OpenAPIGenerator", package: "swift-openapi-generator")
+            exclude: [
+                "openapi.json",
+                "openapi-generator-config.yaml"
             ]
         ),
         .testTarget(
@@ -57,6 +58,13 @@ let package = Package(
     ]
 )
 
+// Only added by the documentation targets, so consumers don't resolve it.
+if ProcessInfo.processInfo.environment["ENABLE_DOCC_PLUGIN"] != nil {
+    package.dependencies.append(
+        .package(url: "https://github.com/swiftlang/swift-docc-plugin", from: "1.1.0")
+    )
+}
+
 // MARK: - Constants
 
 enum AppStoreConnectService {