Update base64 dependency to 0.13
This is updated simply to track the latest dependency.
@@ -29,7 +29,7 @@ license = "Apache-2.0"
[dependencies]
actix-web = { version = "3", optional = true }
-base64 = { version = "0.10", optional = true }
+base64 = { version = "0.13", optional = true }
cfg-if = { version = "1", optional = true }
chrono = { version = "0.4", optional = true }
diesel = { version = "1.0", features = ["chrono", "r2d2", "serde_json"], optional = true }
