fix(cli): hardcoded supported Node.js version (#10742)

* fix(cli): hardcoded supported Node.js version

* Create chatty-teachers-sit.md

---------

Co-authored-by: Erika <[email protected]>

Author: ematipico

.changeset/chatty-teachers-sit.md

@@ -0,0 +1,5 @@
+---
+"astro": major
+---
+
+The lowest version of Node supported by Astro is now Node v18.17.1 and higher.

packages/astro/astro.js

@@ -12,7 +12,7 @@ const CI_INSTRUCTIONS = {
 };
 
 // Hardcode supported Node.js version so we don't have to read differently in CJS & ESM.
-const engines = '>=18.14.1';
+const engines = '>=18.17.1';
 const skipSemverCheckIfAbove = 19;
 
 /** `astro *` */