ci: Set `HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK` to avoid failures

Homebrew attempts to check for outdated dependents or those with broken
linkage. Such behavior might lead to failures when Homebrew updates them
on old macOS images.

This change prevents such behavior.

.github/workflows/ci.yml

@@ -92,6 +92,8 @@ jobs:
         run: clang --version
 
       - name: Install Homebrew packages
+        env:
+          HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK: 1
         run: brew install automake libtool pkg-config gnu-getopt ccache boost libevent miniupnpc libnatpmp zeromq qt@5 qrencode
 
       - name: Set Ccache directory