ci: Run fuzzer task for the master branch only
ci: Run fuzzer task for the master branch only

Github-Pull: bitcoin/bitcoin#22730
Rebased-From: 5a9e255e5a324e7aa0b63a9634aa3cfda9a300bd

rnicoll/dogecoin,rnicoll/dogecoin,rnicoll/dogecoin,rnicoll/dogecoin,rnicoll/dogecoin