[LLVM] actually update the branch for manual builds (#42534)

Author: vchuravy

deps/checksums/llvm

@@ -230,5 +230,5 @@ libLLVM_assert.v12.0.1+4.x86_64-w64-mingw32-cxx03.tar.gz/md5/cc94941da66349a81a6
 libLLVM_assert.v12.0.1+4.x86_64-w64-mingw32-cxx03.tar.gz/sha512/3300cf6c1d7c860e80a3013f3ca0f2de269543372621a1de0550dd80c198bb500688fb58261f3ddecb4d0cb955c9049c584476faff9762e17e469d5d419e7f8b
 libLLVM_assert.v12.0.1+4.x86_64-w64-mingw32-cxx11.tar.gz/md5/fd9779e1d84db70068119d36f991114d
 libLLVM_assert.v12.0.1+4.x86_64-w64-mingw32-cxx11.tar.gz/sha512/70fbee1a6f050c0a0610b246085e1d3dc4e9a3192ba22185752b7e09d2a67f68522572eea7d1d6c5ef04c06b0b6e8053c993a9fd6b42028e1d137c0fd10aefe3
-llvm-julia-12.0.1-3.tar.gz/md5/6aa35f64f20f338647b25bb5b4c7e48e
-llvm-julia-12.0.1-3.tar.gz/sha512/45ae103a6992fe71cc28eec638eb4c765b5601f7a42a857ce31daaae6e126f8a72b05f417696f612051431505fd833a40d7455cbd50f6d210c8195d0cc4bc9d1
+llvm-julia-12.0.1-4.tar.gz/md5/1e19759d7c91fed6d2331335140f2dd8
+llvm-julia-12.0.1-4.tar.gz/sha512/476c5488123cda48a864028068253133811f46ef702014ca0c33d5747a4b9408d5952b84154386fe1ac25f31d7f84ea0ee593ef1875b6ae800dd5b81c427c856

deps/llvm.version

@@ -1,2 +1,2 @@
-LLVM_BRANCH=julia-12.0.1-3
-LLVM_SHA1=julia-12.0.1-3
+LLVM_BRANCH=julia-12.0.1-4
+LLVM_SHA1=julia-12.0.1-4