[lldb][test] Skip TestFrameVarDILGlobalVariableLookup.py on older AArch64 macOS version

Currently failing on the arm64 macOS CI with:
```
06:59:37  Traceback (most recent call last):
06:59:37    File "/Users/ec2-user/jenkins/workspace/llvm.org/lldb-cmake-sanitized/llvm-project/lldb/test/API/commands/frame/var-dil/basics/GlobalVariableLookup/TestFrameVarDILGlobalVariableLookup.py", line 47, in test_frame_var
06:59:37      self.expect_var_path("ExtStruct::static_inline", value="16")
06:59:37    File "/Users/ec2-user/jenkins/workspace/llvm.org/lldb-cmake-sanitized/llvm-project/lldb/packages/Python/lldbsuite/test/lldbtest.py", line 2589, in expect_var_path
06:59:37      value_check.check_value(self, eval_result, str(eval_result))
06:59:37    File "/Users/ec2-user/jenkins/workspace/llvm.org/lldb-cmake-sanitized/llvm-project/lldb/packages/Python/lldbsuite/test/lldbtest.py", line 301, in check_value
06:59:37      test_base.assertSuccess(val.GetError())
06:59:37    File "/Users/ec2-user/jenkins/workspace/llvm.org/lldb-cmake-sanitized/llvm-project/lldb/packages/Python/lldbsuite/test/lldbtest.py", line 2597, in assertSuccess
06:59:37      self.fail(self._formatMessage(msg, "'{}' is not success".format(error)))
06:59:37  AssertionError: '<user expression 0>:1:1: use of undeclared identifier 'ExtStruct::static_inline'
06:59:37     1 | ExtStruct::static_inline
06:59:37       | ^' is not success
06:59:37  Config=arm64-/Users/ec2-user/jenkins/workspace/llvm.org/lldb-cmake-sanitized/lldb-build/bin/clang
06:59:37  ----------------------------------------------------------------------
06:59:37  Ran 1 test in 2.322s
06:59:37
```

Can't repro this locally so skipping on older macOS versions that the CI
is running.
1 file changed
tree: ef0eef7812426241df581c8fcdd6ffaff0b80022
  1. .ci/
  2. .github/
  3. bolt/
  4. clang/
  5. clang-tools-extra/
  6. cmake/
  7. compiler-rt/
  8. cross-project-tests/
  9. flang/
  10. flang-rt/
  11. libc/
  12. libclc/
  13. libcxx/
  14. libcxxabi/
  15. libunwind/
  16. lld/
  17. lldb/
  18. llvm/
  19. llvm-libgcc/
  20. mlir/
  21. offload/
  22. openmp/
  23. polly/
  24. runtimes/
  25. third-party/
  26. utils/
  27. .clang-format
  28. .clang-format-ignore
  29. .clang-tidy
  30. .git-blame-ignore-revs
  31. .gitattributes
  32. .gitignore
  33. .mailmap
  34. CODE_OF_CONDUCT.md
  35. CONTRIBUTING.md
  36. LICENSE.TXT
  37. pyproject.toml
  38. README.md
  39. SECURITY.md
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