Update dependencies and environment for web app

Upgraded '@makerkit/data-loader-supabase-nextjs' to version 1.1.0 and replaced 'autoprefixer' with a newer version. Added new scripts to 'packages.json' and '.env.test' file for test environment. The changes also include removal of unnecessary 'eslint' dependencies and modifications for 'postcss' related dependencies.

apps/web/config/app.config.ts

@@ -32,7 +32,13 @@ const AppConfigSchema = z
   })
   .refine(
     (schema) => {
-      return !(schema.production && schema.url.startsWith('http:'));
+      const isCI = process.env.NEXT_PUBLIC_CI;
+
+      if (isCI ?? !schema.production) {
+        return true;
+      }
+
+      return !schema.url.startsWith('http:');
     },
     {
       message: `Please use a valid HTTPS URL in production.`,