chore(codeowners): drop wildcard to stop Dependabot review pings (#6)

Author: hyperpolymath

.github/CODEOWNERS

@@ -4,11 +4,10 @@
 #
 # Replace hyperpolymath with your GitHub username or team
 
-# Default owners for everything
-* @hyperpolymath
-
+# Default owners for everything
+
 # Security-sensitive files require explicit review
 SECURITY.md @hyperpolymath
 .github/workflows/ @hyperpolymath
 Trustfile.a2ml @hyperpolymath
-.machine_readable/ @hyperpolymath
+.machine_readable/ @hyperpolymath