flow-cli: build with go 1.26

[stefanb]

Timeline Ref:

• go 1.26.0, go@1.25 1.25.7 (new formula) #258912
• go.mod: bump cockroachdb/swiss for Go 1.26 support onflow/flow-cli#2239
• onflow/flow-cli@8f23115
• https://github.com/onflow/flow-cli/releases/tag/v2.13.4
• flow-cli 2.13.4 #262106
• https://github.com/onflow/flow-cli/releases/tag/v2.14.3
• flow-cli 2.14.3, pin go@1.25 #269690
• flow-cli: revision bump, restore build flags #271321

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• 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>?
• Is your test running fine brew test <formula>?
• 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>?

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[github-actions]

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