[tsp-client] remove autorest dep (#13818)

* remove autorest from deps

* revert convert command to previous npx usage

* changelog and package.json updates

* fix ref

* Update tools/tsp-client/src/commands.ts

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update tools/tsp-client/src/commands.ts

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* add --use back

---------

Co-authored-by: catalinaperalta <caperal@microsoft.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: 3 people

tools/tsp-client/CHANGELOG.md

@@ -1,5 +1,10 @@
 # Release
 
+## Unreleased - 0.32.0
+
+- Remove `autorest`, `autorest/core`, and `autorest/openapi-to-typespec` from tsp-client dependencies.
+- Use `npx` to call openapi-to-typespec conversion tool.
+
 ## 2025-11-24 - 0.31.0
 
 - Add support for batch library generation. See [README](./README.md) for more information on how to configure.