Upgrade codecov 4.5.0 -> 4.6.0.

Author: io7m

.github/workflows/main.linux.temurin.lts.yml

@@ -47,7 +47,7 @@ jobs:
           path: ./com.io7m.timehack6435126.tests/target/surefire-reports
 
       - name: Coverage
-        uses: codecov/codecov-action@v4.5.0
+        uses: codecov/codecov-action@v4.6.0
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
           file: com.io7m.timehack6435126.tests/target/site/jacoco-aggregate/jacoco.xml