Fix mismatched_lifetime_syntaxes warnings

Author: Urgau

src/github.rs

@@ -92,7 +92,7 @@ impl GithubClient {
         req: Request,
         sleep: Duration,
         remaining_attempts: u32,
-    ) -> BoxFuture<Result<Response, reqwest::Error>> {
+    ) -> BoxFuture<'_, Result<Response, reqwest::Error>> {
         #[derive(Debug, serde::Deserialize)]
         struct RateLimit {
             #[allow(unused)]

src/utils.rs

@@ -1,7 +1,7 @@
 use std::borrow::Cow;
 
 /// Pluralize (add an 's' sufix) to `text` based on `count`.
-pub fn pluralize(text: &str, count: usize) -> Cow<str> {
+pub fn pluralize(text: &str, count: usize) -> Cow<'_, str> {
     if count == 1 {
         text.into()
     } else {