fix(ruleset-bundler): remove extraneous 'external dependency' warnings (#2475)

Author: billiegoose

packages/ruleset-bundler/src/index.ts

@@ -35,6 +35,14 @@ export async function bundleRuleset(
       if (e.code === 'MISSING_NAME_OPTION_FOR_IIFE_EXPORT') {
         return;
       }
+      // The Spectral packages themselves are not included in the bundle.
+      if (
+        e.code === 'UNRESOLVED_IMPORT' &&
+        typeof e.source === 'string' &&
+        e.source.startsWith('@stoplight/spectral')
+      ) {
+        return;
+      }
 
       fn(e);
     },