Update dependency factory_bot to v6.4.3

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
factory_bot (changelog)	6.4.2 -> 6.4.3

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Release Notes

thoughtbot/factory_bot (factory_bot)

v6.4.3: 6.4.3

Compare Source

• Fix: Support models without ID setters in build_stubbed (Olivier Bellone).
• Fix: Explicit observer dependency (Oleg Antonyan).
• Internal: Add Rails 7.1 to CI (Olivier Bellone).
• Internal: Bump github actions/checkout to v4 (Lorenzo Zabot)
• Internal: Stop passing disable-error_highlight in CI (Mike Burns).
• Internal: Relax the exception message check (Mike Burns).

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