chore: add pnpm-workspace contributors (SchemaStore#4651)

Author: danielbayley

.github/CODEOWNERS

@@ -39,4 +39,8 @@ src/schemas/json/tombi.json @yassun7010
 src/schemas/json/pyproject.json @yassun7010
 
 # Managed by Contextive Team:
-src/schemas/json/contextive-glossary.json @chrissimon-au
+src/schemas/json/contextive-glossary.json @chrissimon-au
+
+# pnpm Schemas:
+src/schemas/json/pnpm-workspace.json @danielbayley @btea
+src/test/pnpm-workspace/ @danielbayley @btea