Update licensing metadata

Author: antonwolfy

conda-recipe/meta.yaml

@@ -67,7 +67,7 @@ test:
 
 about:
     home: https://github.com/IntelPython/dpnp
-    license: BSD-2-Clause
+    license: BSD-3-Clause
     license_file: LICENSE.txt
     summary: 'Data Parallel Extension for NumPy'
     description: |
@@ -77,7 +77,7 @@ about:
         disclaimers or license terms for third party or open source software
         included in or with the software.</strong>
         <br/><br/>
-        EULA: <a href="https://opensource.org/licenses/BSD-2-Clause" target="_blank">BSD-2-Clause</a>
+        EULA: <a href="https://opensource.org/licenses/BSD-3-Clause" target="_blank">BSD-3-Clause</a>
         <br/><br/>
 
 extra:

pyproject.toml

@@ -66,7 +66,7 @@ keywords = [
   "gpu",
   "dpcpp"
 ]
-license = "BSD-2-Clause"
+license = "BSD-3-Clause"
 license-files = ["LICENSE.txt"]
 maintainers = [{name = "Intel Corporation"}]
 name = "dpnp"