Update the googletest module URL

[tuhaihe]

fix #427

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Change logs

The googletest module code URL cannot be accessed by the community members because the original URL is not public. Change it to the public URL to make it available to community developers.

Why are the changes needed?

For a public access.

Does this PR introduce any user-facing change?

No.

How was this patch tested?

Please detail how the changes were tested, including manual tests and any relevant unit or integration tests.

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