Go 1.16 introduced some changes that made it impossible to run an emd node compiled with it. Starting the node would result in the error message panic: crypto/hmac: hash generation function does not produce unique values.
Recent releases of the Cosmos-SDK included a fix for this issue. This release upgrades its dependencies to include that fix for the e-Money nodes.
Nodes that are already up and running do not need to upgrade to this release.