Set explicit shell options as default for job + relax NumPy requirement

Author: matt-graham

.github/workflows/tests.yml

@@ -25,6 +25,9 @@ jobs:
   build:
 
     runs-on: ${{ matrix.os }}
+    defaults:
+      run:
+        shell: bash -el {0}
     strategy:
       matrix:
         python-version: ["3.11", "3.12", "3.13"]
@@ -49,12 +52,11 @@ jobs:
 
     - if: matrix.os == 'macos-latest'
       name: Install dependencies with conda on MacOS
-      shell: bash -el {0}
       # Avoid OpenMP runtime incompatibility when using PyPI wheels
       # by installing torch and healpy using conda
       # https://github.com/healpy/healpy/issues/1012
       run: |
-        conda install jax "jax>=0.3.13,<0.6.0" "numpy>=1.20,<2" ducc0 healpy pytorch pytest pytest-cov
+        conda install jax "jax>=0.3.13,<0.6.0" "numpy>=1.20" ducc0 healpy pytorch pytest pytest-cov
         python -m pip install --upgrade pip
         pip install --no-deps so3 pyssht
         pip install --no-deps .