Fix changelog to include Unsqueeze Op. update for ONNX opset 13 or higher as list of PRs

Author: MatteoFasulo

CHANGELOG.md

@@ -13,6 +13,7 @@ This file contains the changelog for the Deeploy project. The changelog is divid
 - Node Mangling to avoid duplication [#93](https://github.com/pulp-platform/Deeploy/pull/93)
 - Prepare Post v0.2.0 Release [#104](https://github.com/pulp-platform/Deeploy/pull/104)
 - Use Docker digests instead of arch-specific tags [#106](https://github.com/pulp-platform/Deeploy/pull/106)
+- Fix `Unsqueeze` Op. when using ONNX opset 13 or higher (from attribute to input) [#119](https://github.com/pulp-platform/Deeploy/pull/119)
 
 ### Added
 - Add manual type inference feature (CLI: `--input-type-map`/`--input-offset-map`) to resolve ambiguities when test inputs are not representative enough