Update MAINTAINERS.yaml

[ash17290]

No description provided.

[ash17290]

We require all PRs to follow Conventional Commits specification.
More details 👇🏼

 No release type found in pull request title "Update MAINTAINERS.yaml". Add a prefix to indicate what kind of release this pull request corresponds to. For reference, see https://www.conventionalcommits.org/

Available types:
 - feat: A new feature
 - fix: A bug fix
 - docs: Documentation only changes
 - style: Changes that do not affect the meaning of the code (white-space, formatting, missing semi-colons, etc)
 - refactor: A code change that neither fixes a bug nor adds a feature
 - perf: A code change that improves performance
 - test: Adding missing tests or correcting existing tests
 - build: Changes that affect the build system or external dependencies (example scopes: gulp, broccoli, npm)
 - ci: Changes to our CI configuration files and scripts (example scopes: Travis, Circle, BrowserStack, SauceLabs)
 - chore: Other changes that don't modify src or test files
 - revert: Reverts a previous commit

[ash17290]

A new maintainer, Ashish Padhy, has been added to MAINTAINERS.yaml. Only asyncapi-bot can make such changes. Maintainers are added to the file in an automated way only if they are mentioned in the CODEOWNERS file in any repository under AsyncAPI GitHub organization.