[clang-tools-extra] [clang-tidy] fix incorrect configuration file path resolving when file paths contain `..` (PR #121323)

[Piotr Zegar via cfe-commits]

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@@ -117,6 +117,9 @@ Improvements to clang-tidy
 
 - Improved :program:`clang-tidy` by accepting parameters file in command line.
 
+- Improved :program:`clang-tidy` by fixing incorrect configuration file path
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PiotrZSL wrote:

Note: to be honest all those 'Improved' release notes for same program could be merged together

https://github.com/llvm/llvm-project/pull/121323