GH-45132 Upgrade LLVM to 18.1 which fixes the unexported orc symbol issu.

Author: lriggs

ci/docker/java-jni-manylinux-201x.dockerfile

@@ -18,6 +18,8 @@
 ARG base
 FROM ${base}
 
+ARG LLVM=18
+
 # Install the libraries required by the Gandiva to run
 # Use enable llvm[enable-rtti] in the vcpkg.json to avoid link problems in Gandiva
 RUN vcpkg install \

ci/vcpkg/ports.patch

@@ -62,7 +62,7 @@ index 000000000..e839c93a4
 +   return v & ~(mask << (8 * n));
 +-#endif
 + }
-+ 
++
 + static inline bool LeftShiftOverflows(uint8_t value, uint32_t shift) {
 diff --git a/ports/thrift/portfile.cmake b/ports/thrift/portfile.cmake
 index 1501782..71d2147 100644