Merge pull request #22938 from compnerd/release-the-kraken

test: loosen -Xllvm version string matching

Author: compnerd

test/Frontend/Xllvm.swift

@@ -2,4 +2,4 @@
 // CHECK-HELP: -version
 
 // RUN: %swift -Xllvm -version -emit-sil %s 2>&1 | %FileCheck %s -check-prefix=CHECK-SIL
-// CHECK-SIL: LLVM (http://llvm.org/)
+// CHECK-SIL: LLVM {{(http://llvm.org/)|version }}