ci: update the MSRV to 1.82.0

As the project uses lock file version `4`, we should update the minimum
Rust tool chain to 1.72.0, the first version with this feature stable.
However, clippy recommends 'iter_repeat_n', but it was only stabled in
1.82.0, setting the minimum version to this one.

- <https://doc.rust-lang.org/nightly/cargo/CHANGELOG.html#changed-4>
- <https://doc.rust-lang.org/nightly/std/iter/fn.repeat_n.html>

Author: henrybarreto

.github/workflows/linux.yml

@@ -15,7 +15,7 @@ jobs:
         name: [MSRV, stable, nightly]
         include:
           - name: MSRV
-            version: 1.65.0
+            version: 1.82.0
           - name: stable
             version: stable
           - name: nightly