Fix some of the CI issues

Author: 0xTim

Sources/SwiftSyntaxMacrosTestSupport/Assertions.swift

@@ -51,7 +51,7 @@ public typealias DiagnosticSpec = SwiftSyntaxMacrosGenericTestSupport.Diagnostic
 ///   - indentationWidth: The indentation width used in the expansion.
 ///   - buildConfiguration: a build configuration that will be made available
 ///     to the macro implementation
-/// - SeeAlso: ``assertMacroExpansion(_:expandedSource:diagnostics:macroSpecs:applyFixIts:fixedSource:testModuleName:testFileName:indentationWidth:buildConfiguration:file:line:)``
+/// - SeeAlso: ``assertMacroExpansion(_:expandedSource:diagnostics:macroSpecs:applyFixIts:fixedSource:testModuleName:testFileName:indentationWidth:buildConfiguration:fileID:file:line:column:)``
 ///   to also specify the list of conformances passed to the macro expansion.
 public func assertMacroExpansion(
   _ originalSource: String,

Tests/SwiftSyntaxMacroExpansionTest/SwiftTestingTests.swift

@@ -1,3 +1,15 @@
+//===----------------------------------------------------------------------===//
+//
+// This source file is part of the Swift.org open source project
+//
+// Copyright (c) 2014 - 2023 Apple Inc. and the Swift project authors
+// Licensed under Apache License v2.0 with Runtime Library Exception
+//
+// See https://swift.org/LICENSE.txt for license information
+// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+//
+//===----------------------------------------------------------------------===//
+
 #if canImport(Testing)
 import Testing
 import SwiftSyntaxMacrosTestSupport