Add signature for new Authenticode cert

[hwine]

[See #12 for last time.]

Bug 1554767 introduces a new certificate for windows. Get the serial number and add to code, redeploy.

Action Plan:

• [x] obtain new signature
• [x] add to list
• [x] add new test data
• [x] pass all local tests
• [x] pass all AWS tests
• [x] bump version & commit
• [x] deploy to stage
• [x] deploy to prod