update tests

Author: Tieqiong

.github/workflows/tests-on-pr.yml

@@ -14,7 +14,13 @@ jobs:
       run:
         shell: bash -l {0}
 
-    runs-on: macos-14
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-13, macos-14]
+        python-version: [3.11, 3.12, 3.13]
+
     steps:
       - name: Check out diffpy.srreal
         uses: actions/checkout@v4
@@ -26,7 +32,7 @@ jobs:
           auto-update-conda: true
           environment-file: environment.yml
           auto-activate-base: false
-          python-version: 3.12
+          python-version: ${{ matrix.python-version }}
 
       - name: Conda config
         run: >-
@@ -35,8 +41,8 @@ jobs:
 
       - name: Install diffpy.srreal and requirements
         run: |
+          conda install --file requirements/conda.txt
           conda install --file requirements/test.txt
-          conda install boost numpy libdiffpy setuptools diffpy.structure periodictable gsl
           python -m pip install . --no-deps
 
       - name: Validate diffpy.pdfgui