Install RC numba for Python 3.13

Author: jobovy

.github/workflows/build.yml

@@ -280,8 +280,7 @@ jobs:
     - name: Install numba
       if: ${{ matrix.REQUIRES_NUMBA }}
       run: |
-        pip install git+https://github.com/numba/llvmlite.git@main#egg=llvmlite
-        pip install git+https://github.com/numba/numba.git@main#egg=numba
+        pip install --pre numba
         # numba may force install an older version of setuptools,
         # but it isn't actually a *runtime* requirement numba/numba#8366
         pip install --upgrade --force-reinstall setuptools