chore(ci): use manylinux clang install script (#351)

Author: mayeut

pyproject.toml

@@ -99,7 +99,7 @@ manylinux-aarch64-image = "manylinux2014"
 manylinux-ppc64le-image = "manylinux2014"
 manylinux-s390x-image = "manylinux2014"
 manylinux-armv7l-image = "manylinux_2_31"
-manylinux-riscv64-image = "ghcr.io/mayeut/manylinux_2_31:2025.11.22-1"
+manylinux-riscv64-image = "ghcr.io/mayeut/manylinux_2_31:2026.06.16-1"
 musllinux-x86_64-image = "musllinux_1_2"
 musllinux-i686-image = "musllinux_1_2"
 musllinux-aarch64-image = "musllinux_1_2"
@@ -118,7 +118,7 @@ environment = { MACOSX_DEPLOYMENT_TARGET = "10.9" }
 
 [[tool.cibuildwheel.overrides]]
 select = "*-*linux*"
-before-all = "./scripts/install-static-clang.sh"
+before-all = "manylinux-install-clang"
 inherit.environment = "append"
 environment = { CC = "/opt/clang/bin/clang", CXX = "/opt/clang/bin/clang++", LDFLAGS = "-fuse-ld=lld" }
 inherit.environment-pass = "append"