Bump xuantie toolchains V3.1.0 for c910v

Author: xctan

.github/workflows/c910v.yml

@@ -14,8 +14,8 @@ jobs:
     if: "github.repository == 'OpenMathLib/OpenBLAS'"
     runs-on: ubuntu-latest
     env:
-      xuetie_toolchain: https://occ-oss-prod.oss-cn-hangzhou.aliyuncs.com/resource//1744886347539
-      toolchain_file_name: Xuantie-900-gcc-linux-6.6.0-glibc-x86_64-V3.0.2-20250410.tar.gz
+      xuetie_toolchain: https://occ-oss-prod.oss-cn-hangzhou.aliyuncs.com/resource//1749714096626
+      toolchain_file_name: Xuantie-900-gcc-linux-6.6.0-glibc-x86_64-V3.1.0-20250522.tar.gz
     strategy:
       fail-fast: false
       matrix: