Upgrade dependencies

Cargo.toml

@@ -5,20 +5,22 @@ authors = ["tec <[email protected]>"]
 edition = "2018"
 
 [dependencies]
-base64 = "^0.11"
-chrono = "^0.4.10"
-diesel = { version = "1.4.3", features = ["sqlite"] }
+base64 = "0.13.0"
+chrono = "0.4.19"
+diesel = { version = "1.4.5", features = ["sqlite"] }
 guard = "0.5.0"
-indexmap = { version = "1.3.1", features = ["serde-1"] }
-lazy_static = "^1.4.0"
-ldap3 = "0.6"
-log = "^0.4.8"
-openssl = "^0.10"
-rand = "^0.7.2"
-rayon = "1.3.0"
-regex = "^1.3"
-serde = "^1.0.104"
-serde_yaml = "^0.8"
-serenity = "0.8.0"
-simplelog = "^0.7.4"
-url = "^2.1"
+ical = "0.7.0"
+indexmap = { version = "1.6.1", features = ["serde-1"] }
+lazy_static = "1.4.0"
+ldap3 = "0.9.1"
+log = "0.4.11"
+openssl = "0.10.32"
+rand = "0.8.1"
+rayon = "1.5.0"
+regex = "1.4.3"
+reqwest = "0.11.0"
+serde = "1.0.118"
+serde_yaml = "0.8.15"
+serenity = "0.10.1"
+simplelog = "0.9.0"
+url = "2.2.0"