RHIDP-7748 - Update release version for 1.5.2 (#1221)

Author: Gerry-Forde

artifacts/attributes.adoc

@@ -11,8 +11,8 @@
 :product-short: Developer Hub
 :product-very-short: RHDH
 :product-version: 1.5
-:product-bundle-version: 1.5.1
-:product-chart-version: 1.5.1
+:product-bundle-version: 1.5.2
+:product-chart-version: 1.5.2
 :product-backstage-version: 1.35.0
 :product-custom-resource-type: Backstage
 :rhdeveloper-name: Red Hat Developer