Update current year

Author: andf-mongodb

snooty.toml

@@ -183,7 +183,7 @@ copy = "©"
 # hardlink replace:: {0}/{1}'.format(conf.project.url, conf.git.branches.current)
 # branch replace:: ``{0}``'.format(conf.git.branches.current)
 ent-build = "MongoDB Enterprise"
-year = "2020"
+year = "2021"
 bi = "MongoDB Connector for BI"
 version = "{+version+}"