try using platform as cache key

Author: lithomas1

.github/workflows/wheels.yml

@@ -173,6 +173,8 @@ jobs:
             wheel
           cache-downloads: true
           cache-environment: true
+          cache-environment-key: ${{ matrix.buildplat[0] }}
+          cache-downloads-key: ${{ matrix.buildplat[0] }}
 
       - name: Validate wheel RECORD
         shell: bash -el {0}