Update xmrig to version 6.18.1 / rev 26 via SR 1032798
    
    https://build.opensuse.org/request/show/1032798
    by user pluskalm + dimstar_suse
    - Update to version 6.18.1:
      * v6.18.1
      * Update CHANGELOG.md
      * Added Zen4 to randomx_boost.sh
      * RandomX: added MSR mod for Zen 4
      * Update CHANGELOG.md
      * Fix: protectRX flushed CPU cache only on MacOS/iOS
      * Update m_size only if blob was set successfully
      * Don't reset when pool sends the same job blob
      * RandomX: optimized CFROUND elimination more
      * RandomX: optimized CFROUND elimination
      * RandomX: added Blake2 AVX2 version
      * Fixed GCC 12 warnings
      * Update README.md
      * v6.18.1-dev
      * Recognize armv7ve as valid ARMv7 target.