Update and rename mambaforge3-latest to mambaforge3

plugins/python-build/share/python-build/mambaforge3-latest → plugins/python-build/share/python-build/mambaforge3

@@ -17,7 +17,7 @@ case "$(anaconda_architecture 2>/dev/null || true)" in
 * )
   { echo
     colorize 1 "ERROR"
-    echo ": The binary distribution of Mambaforge is not available for $(anaconda_architecture 2>/dev/null || true)."
+    echo ": The binary distribution of Mambaforge3 is not available for $(anaconda_architecture 2>/dev/null || true)."
     echo
   } >&2
   exit 1