Update email_validator to 1.0.3 (#426)
Update email_validator to 1.0.3 (#426)

Between a -stage deploy and a -prod deploy, the maintainer of this package
pushed out a wheel for 1.0.2 which broke our hashing since we had a hash for the
.tar.gz, but not the .whl.

Then the maintainer released 1.0.3 as a wheel--there are no other changes in the
package.

I figured we might as well upgrade to 1.0.3.
mozilla/standup,mozilla/standup,mozilla/standup,mozilla/standup