Update Dapr category on manifest.yaml

[salaboy]

Updating category for Dapr into the marketplace

If your pull request is to submit a new application to the marketplace, please answer the following questions:

• [x] Have you followed the guidelines in our Contributing document in setting up the application?
• [x] Have you checked that the application your submission is proposing to add does not yet exist on the Marketplace, or as a pull request to be processed?
• [x] Have you tested your application on the Civo managed Kubernetes service? Please include a screenshot.
• [x] Can you confirm that the software you are submitting licensed for use in a publicly-available Kubernetes marketplace?
• [x] Have you included the specific version of the application to be installed?

If your pull request concerns an existing Marketplace application, please make sure you have:

• [ ] Notified the Maintainer of the application in this pull request so that they are aware of your proposal.
• [ ] Outlined the changes you are proposing, and the reasons these are required (e.g. stability, compatibility with new versions of Kubernetes implementations, etc).
• [ ] Tested that the application works with the proposed updates applied (including a screenshot).
• [ ] Updated the version number of the app if that has changed.

[salaboy]

@saiyam1814 I think I've used a non existing category.. do you know how much does it take to appear on the marketplace?