chore: use brew trust instead of deprecated trust bypass in smoke test

Author: apgiorgi

.github/workflows/post-release-verify.yml

@@ -55,13 +55,12 @@ jobs:
             packaging/homebrew/dci.rb.tmpl dist/verify/dci.rb
 
       - name: Install via Homebrew formula
-        env:
-          # Homebrew 6+ refuses to load formulae from untrusted taps. The local
-          # tap-new tap can't be trusted per-formula (no canonical remote), and
-          # this job verifies the rendered formula, not the trust UX.
-          HOMEBREW_NO_REQUIRE_TAP_TRUST: 1
         run: |
           brew tap-new verify/test
+          # Homebrew 6+ refuses to load formulae from untrusted taps. Per-formula
+          # trust is unavailable for local taps (no canonical remote), but
+          # whole-tap trust works.
+          brew trust verify/test
           cp dist/verify/dci.rb "$(brew --repository)/Library/Taps/verify/homebrew-test/Formula/dci.rb"
           brew install verify/test/dci
           dci --version