add pari-2.15.1

Author: videlec

.github/workflows/main.yml

@@ -15,7 +15,7 @@ jobs:
             matrix:
                 os: [ubuntu-latest]
                 python-version: ['3.6', '3.7', '3.8', '3.9', '3.10', '3.11.0-rc.2']
-                pari-version: ['pari-2.9.4', 'pari-2.9.5', 'pari-2.11.0', 'pari-2.11.0', 'pari-2.11.2', 'pari-2.11.3', 'pari-2.11.4', 'pari-2.13.0', 'snapshot']
+                pari-version: ['pari-2.9.4', 'pari-2.9.5', 'pari-2.11.0', 'pari-2.11.0', 'pari-2.11.2', 'pari-2.11.3', 'pari-2.11.4', 'pari-2.13.0', 'pari-2.15.1', 'snapshot']
         env:
           LC_ALL: C
           PARI_VERSION: ${{ matrix.pari-version }}