Potential fix for code scanning alert no. 18: Incomplete regular expression for hostnames (#3700)

* Potential fix for code scanning alert no. 18: Incomplete regular expression for hostnames

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

* Potential fix for code scanning alert no. 25: Missing regular expression anchor

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

* changeset

---------

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

Author: mxiao-cll

.changeset/strong-geckos-teach.md

@@ -0,0 +1,5 @@
+---
+'@chainlink/ea-scripts': patch
+---
+
+Security fix

packages/scripts/src/schema-flatten/lib.ts

@@ -124,7 +124,7 @@ function createChainlinkLabsResolver() {
 
   const resolver: $RefParser.ResolverOptions = {
     order: 1,
-    canRead: /^https:\/\/external-adapters.chainlinklabs.com/i,
+    canRead: /^https:\/\/external-adapters\.chainlinklabs\.com$/i,
     read: (file, callback) => {
       if (!callback) {
         console.error('[resolver] No callback found')