[InstallAPI][test] Tweak test to run on older CI config

clang/test/InstallAPI/diagnostics-dsym.test

@@ -4,20 +4,20 @@
 ; RUN: split-file %s %t
 
 // Build a simple dylib with debug info.
-; RUN: %clang --target=arm64-apple-macos13 -g -dynamiclib %t/foo.c \
+; RUN: %clang --target=x86_64-apple-macos10.15 -g -dynamiclib %t/foo.c \
 ; RUN: -current_version 1 -compatibility_version 1 -L%t/usr/lib \
 ; RUN: -save-temps \
 ; RUN: -o %t/foo.dylib -install_name %t/foo.dylib
 ; RUN: dsymutil %t/foo.dylib -o %t/foo.dSYM
 
-; RUN: not clang-installapi -x c++ --target=arm64-apple-macos13 \
+; RUN: not clang-installapi -x c++ --target=x86_64-apple-macos10.15 \
 ; RUN: -install_name %t/foo.dylib  \
 ; RUN: -current_version 1 -compatibility_version 1 \
 ; RUN: -o %t/output.tbd \
 ; RUN: --verify-against=%t/foo.dylib --dsym=%t/foo.dSYM \
 ; RUN: --verify-mode=Pedantic 2>&1 | FileCheck %s
 
-; CHECK: violations found for arm64 
+; CHECK: violations found for x86_64 
 ; CHECK: foo.c:5:0: error: no declaration found for exported symbol 'bar' in dynamic library
 ; CHECK: foo.c:1:0: error: no declaration found for exported symbol 'foo' in dynamic library
 
@@ -29,15 +29,11 @@ extern char bar;
 char bar = 'a';
 
 ;--- usr/lib/libSystem.tbd
-{
-  "main_library": {
-    "install_names": [
-      {"name": "/usr/lib/libSystem.B.dylib"}
-    ],
-    "target_info": [
-      {"target": "arm64-macos"}
-    ]
-  },
-  "tapi_tbd_version": 5
-}
-
+--- !tapi-tbd
+tbd-version:     4
+targets:         [ x86_64-macos ]
+install-name:    '/usr/lib/libSystem.B.dylib'
+exports: 
+  - targets: [ x86_64-macos ]
+    symbols: [ dyld_stub_binder ]
+...