Update ReSharper InspectCode tool-version to 2026.1.0.1

The GitHub Action (v0.12) defaults to ReSharper tools 2025.3.3.
Override with tool-version: 2026.1.0.1 for the latest analysis engine.

Agent-Logs-Url: https://github.com/winnerspiros/osu/sessions/b643ce60-59ed-4bfa-b945-ea9fe6829fd7

Co-authored-by: winnerspiros <1675249+winnerspiros@users.noreply.github.com>

Author: Copilot

.github/workflows/ci.yml

@@ -59,6 +59,7 @@ jobs:
       - name: InspectCode
         uses: JetBrains/ReSharper-InspectCode@v0.12
         with:
+          tool-version: 2026.1.0.1
           # this is WTF tier but if you don't specify *both* of these the defaults assume `build: true`
           build: false
           no-build: true