fix: correct missing trailing slash in REGISTRY_URL for Databricks CLI download

- Fixed a typo by adding a missing trailing slash to the `REGISTRY_URL` in the `curl` command.
- Ensures proper URL construction when downloading the Databricks CLI from custom registries.

Author: GezimSejdiu

setup_release.sh

@@ -42,7 +42,7 @@ esac
 cd "$RUNNER_TEMP"
 
 # Download release archive.
-curl -L -s -O "${REGISTRY_URL}databricks/cli/releases/download/v${VERSION}/${FILE}.zip"
+curl -L -s -O "${REGISTRY_URL}/databricks/cli/releases/download/v${VERSION}/${FILE}.zip"
 
 # Unzip release archive.
 unzip -q "${FILE}.zip" -d .bin