Bump CodSpeedHQ/action from 3 to 4 (#54)

Author: dependabot[bot]

.github/workflows/build.yml

@@ -145,7 +145,8 @@ jobs:
       - uses: taiki-e/install-action@v2
         with: { tool: cargo-codspeed }
       - run: cargo codspeed build
-      - uses: CodSpeedHQ/action@v3
+      - uses: CodSpeedHQ/action@v4
         with:
           run: cargo codspeed run
           token: ${{ secrets.CODSPEED_TOKEN }}
+          mode: instrumentation