ci: install llvm tools in sanitizers workflow

`llvm-symbolizer` is necessary for processing suppressions.

Author: bavshin-f5

.github/workflows/sanitizers.yaml

@@ -12,7 +12,7 @@ env:
   BUILDREQUIRES: >-
     openssl-devel pcre2-devel zlib-devel
     cargo rust-src rustfmt
-    clang compiler-rt
+    clang compiler-rt llvm
     git-core
     make patch
     perl-FindBin