Upgrade to Picasso 2.71828

[brendan-fahy]

Changes

• Upgrade to Picasso 2.71828

Reviewers

@brendan-fahy @baz8080 @schlan @eepDev @patrick-doyle

References

• Picasso changelog

Risks

• 2.71828 is a breaking change. Anyone using 2.5.2 who adds this version of Belvedere will have their project break because Belvedere will bring in 2.71828 and break their Picasso integration. We possibly shouldn't merge this to master, but likely want to provide a compatibility version of Belvedere that uses this version, for anyone who has upgraded to 2.71828