chore: tagRelease.sh: bump to 1.4.3 in release-1.4 branch (#1051)

Signed-off-by: rhdh-bot service account <[email protected]>

Author: rhdh-bot

artifacts/attributes.adoc

@@ -12,8 +12,8 @@
 :product-very-short: RHDH
 :product-version: 1.4
 :product-version-next: 1.5.0
-:product-bundle-version: 1.4.2
-:product-chart-version: 1.4.2
+:product-bundle-version: 1.4.3
+:product-chart-version: 1.4.3
 :product-backstage-version: 1.32.6
 :product-custom-resource-type: Backstage
 :rhdeveloper-name: Red Hat Developer