Validate icon (#1441)

## Changes

<img width="579" alt="Screenshot 2024-11-06 at 11 36 36"
src="https://github.com/user-attachments/assets/1a12f934-69b6-436b-a8b4-f7bcdf6b2527">


## Tests
<!-- How is this tested? -->

packages/databricks-vscode/package.json

@@ -226,7 +226,10 @@
             },
             {
                 "command": "databricks.bundle.deployAndValidate",
-                "icon": "$(beaker)",
+                "icon": {
+                    "dark": "resources/dark/check-line-icon.svg",
+                    "light": "resources/light/check-line-icon.svg"
+                },
                 "title": "Deploy the bundle and validate the pipeline",
                 "enablement": "databricks.context.activated && databricks.context.bundle.isTargetSet && databricks.context.bundle.deploymentState == idle",
                 "category": "Databricks"