Update build.yml to support 3.13

Author: rohanbabbar04

.github/workflows/build.yml

@@ -14,7 +14,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest]
-        python-version: ['3.9', '3.10', '3.11', '3.12']
+        python-version: ['3.9', '3.10', '3.11', '3.12', '3.13']
         mpi: ['mpich', 'openmpi', 'intelmpi']
         rank: ['2', '3', '4']
         exclude:
@@ -24,9 +24,6 @@ jobs:
         # ”libfabric EFA provider is operating in a
         # condition that could result in memory
         # corruption”
-          - os: ubuntu-latest
-            python-version: '3.8'
-            mpi: 'mpich'
           - os: ubuntu-latest
             python-version: '3.9'
             mpi: 'mpich'