BUG: Use transfer.sh to upload macOS packages

filebin.ca is failing

Author: thewtex

.travis.yml

@@ -13,4 +13,4 @@ script:
 - chmod u+x macpython-download-cache-and-build-module-wheels.sh
 - ./macpython-download-cache-and-build-module-wheels.sh
 - tar -zcvf dist.tar.gz dist/
-- curl -F file="@dist.tar.gz" https://filebin.ca/upload.php
+- curl --upload-file dist.tar.gz https://transfer.sh/dist.tar.gz