Update to new rinja version (askama)

Author: GuillaumeGomez

Diff for: Cargo.toml

@@ -42,7 +42,7 @@ walkdir = "2.3"
 filetime = "0.2.9"
 itertools = "0.12"
 pulldown-cmark = { version = "0.11", default-features = false, features = ["html"] }
-rinja = { version = "0.3", default-features = false, features = ["config"] }
+askama = { version = "0.13", default-features = false, features = ["alloc", "config", "derive"] }
 
 # UI test dependencies
 clippy_utils = { path = "clippy_utils" }

Diff for: rinja.toml renamed to askama.toml

@@ -2,15 +2,15 @@
 #![warn(rust_2018_idioms, unused_lifetimes)]
 #![allow(unused_extern_crates)]
 
+use askama::Template;
+use askama::filters::Safe;
 use cargo_metadata::Message;
 use cargo_metadata::diagnostic::{Applicability, Diagnostic};
 use clippy_config::ClippyConfiguration;
 use clippy_lints::LintInfo;
 use clippy_lints::declared_lints::LINTS;
 use clippy_lints::deprecated_lints::{DEPRECATED, DEPRECATED_VERSION, RENAMED};
 use pulldown_cmark::{Options, Parser, html};
-use rinja::Template;
-use rinja::filters::Safe;
 use serde::Deserialize;
 use test_utils::IS_RUSTC_TEST_SUITE;
 use ui_test::custom_flags::Flag;