MINOR: Don't install Homebrew's Node.js for JNI macOS build

Homebrew doesn't provide a bottle for node on x86_64 macOS because
Homebrew treats x86_64 macOS as a tier 3 configuration. So "brew
bundle --file=arrow/cpp/Brewfile" fails with "node: no bottle
available!" and the "JNI macos-15-intel x86_64" job can't install
dependencies.

We don't need Node.js for the JNI build. So we skip installing it like
we already do for aws-sdk-cpp and gRPC.

Author: jbonofre

.github/workflows/rc.yml

@@ -248,7 +248,10 @@ jobs:
           #
           # "brew bundle" fails with "no bottle available!" without this
           # because it doesn't build them from source.
-          HOMEBREW_BUNDLE_BREW_SKIP="aws-sdk-cpp grpc" \
+          #
+          # We don't use Homebrew's Node.js too. Homebrew doesn't provide
+          # a bottle for it on x86_64 macOS for the same reason.
+          HOMEBREW_BUNDLE_BREW_SKIP="aws-sdk-cpp grpc node" \
             brew bundle --file=arrow/cpp/Brewfile
           # We want to link aws-sdk-cpp statically but Homebrew's
           # aws-sdk-cpp provides only shared library. If we have