Upgrade TEI. (#501)

Author: Narsil

.github/workflows/liniting.yaml

@@ -23,8 +23,8 @@ jobs:
         with:
           # Released on: 28 December, 2023
           # Branched from master on: 10 November, 2023
-          # https://releases.rs/docs/1.75.0/
-          toolchain: 1.75.0
+          # https://releases.rs/docs/1.85.0/
+          toolchain: 1.85.0
           override: true
           components: rustfmt, clippy
       - name: Install Protoc