tfproviderlint: pin to go@1.23 (go 1.24)

[stefanb]

• Have you followed the guidelines for contributing?
• Have you ensured that your commits follow the commit style guide?
• Have you checked that there aren't other open pull requests for the same formula update/change?
• Have you built your formula locally with HOMEBREW_NO_INSTALL_FROM_API=1 brew install --build-from-source <formula>, where <formula> is the name of the formula you're submitting?
• Is your test running fine brew test <formula>, where <formula> is the name of the formula you're submitting?
• Does your build pass brew audit --strict <formula> (after doing HOMEBREW_NO_INSTALL_FROM_API=1 brew install --build-from-source <formula>)? If this is a new formula, does it pass brew audit --new <formula>?

---

Follow-up to:

• go 1.24.0, go@1.23 1.23.6 (new formula) #201070

Upstream issue:

• Build fails with Go 1.24 bflad/tfproviderlint#325

[stefanb]

May not be needed anymore because of

• Build fails with Go 1.24 bflad/tfproviderlint#325
• https://github.com/bflad/tfproviderlint/releases/tag/v0.31.0
• tfproviderlint 0.31.0 #207490

to be checked.