♿️ access: update lighthouse thresholds in configuration

Changed assertions from warnings to errors for better enforcement across all
key categories. Increased the performance threshold from 0.6 to 0.7 to
ensure higher quality standards.

Author: w3bdesign

lighthouserc.json

@@ -24,10 +24,10 @@
     },
     "assert": {
       "assertions": {
-        "categories:performance": ["warn", { "minScore": 0.6 }],
-        "categories:accessibility": ["warn", { "minScore": 0.9 }],
-        "categories:best-practices": ["warn", { "minScore": 0.9 }],
-        "categories:seo": ["warn", { "minScore": 0.9 }],
+        "categories:performance": ["error", { "minScore": 0.7 }],
+        "categories:accessibility": ["error", { "minScore": 0.9 }],
+        "categories:best-practices": ["error", { "minScore": 0.9 }],
+        "categories:seo": ["error", { "minScore": 0.9 }],
         "uses-responsive-images": ["error", { "maxWastedBytes": 102400 }],
         "uses-http2": "off"
       }