Replace FreeBSD llvm90 package

I don't have FreeBSD so I don't know what I'm doing, hopefully the CI gives accurate feedback

Author: dkorpel

.github/workflows/build_release_template.yml

@@ -271,7 +271,7 @@ jobs:
           usesh: true
           # Need more RAM than the default 1G
           mem: 4096
-          prepare: pkg install -y bash curl curlpp git gmake pkgconf gnupg rsync llvm90
+          prepare: pkg install -y bash curl curlpp git gmake pkgconf gnupg rsync llvm
           run: |
             set -eux