Upgrade time to 0.2.5 (#1254)

* Use `OffsetDateTime` instead of `PrimitiveDateTime`

* Parse time strings with `PrimitiveDateTime::parse` instead of `OffsetDateTime::parse`

* Remove unused `time` dependency from actix-multipart

* Fix a few errors with time related tests from the `time` upgrade

* Implement logic to convert a RFC 850 two-digit year into a full length year, and organize time parsing related functions

* Upgrade `time` to 0.2.2

* Correctly parse C's asctime time format using time 0.2's new format patterns

* Update CHANGES.md

* Use `time` without any of its deprecated functions

* Enforce a UTC time offset when converting an `OffsetDateTime` into a Header value

* Use the more readable version of `Duration::seconds(0)`, `Duration::zero()`

* Remove unneeded conversion of time::Duration to std::time::Duration

* Use `OffsetDateTime::as_seconds_f64` instead of manually calculating the amount of seconds from nanoseconds

* Replace a few additional instances of `Duration::seconds(0)` with `Duration::zero()`

* Truncate any nanoseconds from a supplied `Duration` within `Cookie::set_max_age` to ensure two Cookies with the same amount whole seconds equate to one another

* Fix the actix-http:🍪:do_not_panic_on_large_max_ages test

* Convert `Cookie::max_age` and `Cookie::expires` examples to `time` 0.2

Mainly minor  changes. Type inference can be used alongside the new
`time::parse` method, such that the type doesn't need to be specified.
This will be useful if a refactoring takes place that changes the type.
There are also new macros, which are used where possible.

One change that is not immediately obvious, in `HttpDate`, there was an
unnecessary conditional. As the time crate allows for negative durations
(and can perform arithmetic with such), the if/else can be removed
entirely.

Time v0.2.3 also has some bug fixes, which is why I am not using a more
general v0.2 in Cargo.toml.

v0.2.3 has been yanked, as it was backwards imcompatible. This version
reverts the breaking change, while still supporting rustc back to
1.34.0.

* Add missing `time::offset` macro import

* Fix type confusion when using `time::parse` followed by `using_offset`

* Update `time` to 0.2.5

* Update CHANGES.md

Co-authored-by: Jacob Pratt <the.z.cuber@gmail.com>

actix-http/src/config.rs

@@ -7,7 +7,7 @@ use std::{fmt, net};
 use actix_rt::time::{delay_for, delay_until, Delay, Instant};
 use bytes::BytesMut;
 use futures_util::{future, FutureExt};
-use time;
+use time::OffsetDateTime;
 
 // "Sun, 06 Nov 1994 08:49:37 GMT".len()
 const DATE_VALUE_LENGTH: usize = 29;
@@ -211,7 +211,7 @@ impl Date {
     }
     fn update(&mut self) {
         self.pos = 0;
-        write!(self, "{}", time::at_utc(time::get_time()).rfc822()).unwrap();
+        write!(self, "{}", OffsetDateTime::now().format("%a, %d %b %Y %H:%M:%S GMT")).unwrap();
     }
 }