Remove network-dependent brew tests; keep offline-only assertions

Homebrew formula tests run in a sandboxed/offline environment. Replace
the 6 live-network assertions (unauthenticated search, locations, invalid
key errors) with 5 offline assertions that exit before any network call:
version, --help, no-key account/archive (exit 2), invalid archive ID (exit 2).

Author: ilyazub

.goreleaser.yml

@@ -59,12 +59,6 @@ brews:
     test: |
       assert_match version.to_s, shell_output("#{bin}/serpapi --version")
       assert_match "search", shell_output("#{bin}/serpapi --help")
-      assert_match "organic_results", shell_output("#{bin}/serpapi search q=coffee")
-      assert_match "google", shell_output("#{bin}/serpapi search q=coffee --jq .search_parameters.engine")
-      assert_match "canonical_name", shell_output("#{bin}/serpapi locations q=Austin")
-      assert_match "Invalid API key", shell_output("#{bin}/serpapi --api-key invalid search q=coffee 2>&1", 1)
-      assert_match "Invalid API key", shell_output("#{bin}/serpapi --api-key invalid account 2>&1", 1)
       assert_match "No API key", shell_output("#{bin}/serpapi account 2>&1", 2)
       assert_match "No API key", shell_output("#{bin}/serpapi archive abc123 2>&1", 2)
       assert_match "Invalid archive ID", shell_output("#{bin}/serpapi --api-key x archive ../bad 2>&1", 2)
-      assert_match "api_error", shell_output("#{bin}/serpapi --api-key invalid archive abc123 2>&1", 1)