add new re-designed overview diagram for GUAC (#1831)

* add new re-designed overview diagram for GUAC

Signed-off-by: pxp928 <parth.psu@gmail.com>

* fix copyright

Signed-off-by: pxp928 <parth.psu@gmail.com>

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Signed-off-by: pxp928 <parth.psu@gmail.com>

README.md

@@ -44,7 +44,7 @@ by the following [docs github repository](https://github.com/guacsec/guac-docs).
 
 Here is an overview of the architecture of GUAC:
 
-![image](https://user-images.githubusercontent.com/3060102/235186368-995784eb-7ef2-43e6-b560-17d6014553ca.png)
+![guac_api](https://github.com/guacsec/guac/assets/88045217/ba7a2fd9-798b-4172-bf67-bd24872fdfda)
 
 For an in-depth view and explanation of components of the GUAC Beta, please
 refer to [how GUAC works](https://docs.guac.sh/how-guac-works/).