Enable "deploy empty bundle" acceptance test in the cloud (#3298)

## Why
<!-- Why are these changes needed? Provide the context that the reviewer
might be missing.
For example, were there any decisions behind the change that are not
reflected in the code itself? -->
- For completeness of this test - in cloud mode it runs against cloud
APIs
- It is a useful "no-op" test to have when debugging API calls that the
CLI is making to the Workspace

## Tests
<!-- How have you tested the changes? -->
Ran this test in cloud mode

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release,
add a separate entry in NEXT_CHANGELOG.md as part of your PR. -->

Author: anton-107

acceptance/bundle/deploy/empty-bundle/out.test.toml

@@ -1,5 +1,5 @@
 Local = true
-Cloud = false
+Cloud = true
 
 [EnvMatrix]
   DATABRICKS_CLI_DEPLOYMENT = ["terraform", "direct-exp"]

acceptance/bundle/deploy/empty-bundle/test.toml

@@ -0,0 +1 @@
+Cloud=true