Update llvm13 to version 13.0.1 / rev 6 via SR 951461
    
    https://build.opensuse.org/request/show/951461
    by user aaronpuchert + dimstar_suse
    - Update to version 13.0.1.
      * This release contains bug-fixes for the LLVM 13.0.0 release.
        This release is API and ABI compatible with 13.0.0.
    - Rebase llvm-do-not-install-static-libraries.patch.
    - Drop obsolete patches:
      * llvm-fix-building-with-GCC-12.patch
    - Drop RUNPATH from packaged binaries, instead set LD_LIBRARY_PATH
      for building and testing to simulate behavior of actual package.
    - Update constraints for riscv64