chore(deps): update flashbots/mev-boost docker tag to v1.12.0 (#265)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

compose-mev.yml

@@ -29,7 +29,7 @@ services:
 
   mev-mevboost:
     profiles: [mev-mevboost]
-    image: flashbots/mev-boost:${MEV_MEVBOOST_VERSION:-1.10.1}
+    image: flashbots/mev-boost:${MEV_MEVBOOST_VERSION:-1.12.0}
     command: |
       -${NETWORK}
       -loglevel=debug