ci: compute coverage during Python 3.11 run (#440)

### Summary of Changes

Compute coverage during the Python 3.11 run since it's slightly faster
than the 3.10 run.

Author: lars-reimann

.github/workflows/main.yml

@@ -17,6 +17,6 @@ jobs:
       working-directory: .
       python-version: ${{ matrix.python-version }}
       module-name: safeds
-      coverage: ${{ matrix.python-version == '3.10' }}
+      coverage: ${{ matrix.python-version == '3.11' }}
     secrets:
       CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}

.github/workflows/pr.yml

@@ -21,6 +21,6 @@ jobs:
       working-directory: .
       python-version: ${{ matrix.python-version }}
       module-name: safeds
-      coverage: ${{ matrix.python-version == '3.10' }}
+      coverage: ${{ matrix.python-version == '3.11' }}
     secrets:
       CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}