chore: update codeowners to use new install team handle (#393)

Signed-off-by: Jordan Dubrick <jdubrick@redhat.com>

Author: Jdubrick

.github/CODEOWNERS

@@ -12,7 +12,7 @@
 # This should make it easy to add new rules without breaking existing ones.
 
 # Global rule:
-*            @redhat-developer/rhdh-helm
+*            @redhat-developer/rhdh-install
 
 # Documentation:
 *.md.gotmpl  @redhat-developer/RHDH-content