chore(deps): update dependency google/googletest to v1.18.0

[renovate]

This PR contains the following updates:

Package	Update	Change
google/googletest	minor	v1.17.0 → v1.18.0

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Release Notes

google/googletest (google/googletest)

v1.18.0

Compare Source

Release Notes

GoogleTest will not accept patches of new features to the v1.18.x branch.
We recommend building GoogleTest from the latest commit instead.
Exceptional critical bug fixes may be considered.

C++ Language Support

• GoogleTest now requires at least C++17 and follows Google's Foundational C++ Support Policy. See this table for a list of currently supported versions compilers, platforms, and build tools.

Notable Changes

• Set GTEST_INTERNAL_HAS_STRING_VIEW = 1 in googletest as C++17 always supports it
  (4f47274)
• Many bug fixes

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