chore: update msrv version

Author: jarnura

.github/workflows/CI-pr.yml

@@ -106,7 +106,7 @@ jobs:
       - name: Install Rust
         uses: dtolnay/rust-toolchain@master
         with:
-          toolchain: 1.65
+          toolchain: 1.67
 
       - uses: Swatinem/[email protected]
         with: