Fix compatibility with Boost 1.81

This fixes occurrences in LHCb of he same problem reported in gaudi/Gaudi#255 (closed)

added backport run2 label

added lhcb-lcg-dev3lhcb lhcb-lcg-dev4lhcb labels

added RTA label

• [2023-01-31 00:05] Validation started with lhcb-lcg-dev3lhcb#47
• [2023-01-31 00:08] Validation started with lhcb-lcg-dev4lhcb#47
• [2023-01-31 08:56] Validation started with lhcb-master-mr#6869
• [2023-01-31 15:51] Validation started with lhcb-master-mr#6880

approved this merge request

/ci-test

added ci-test-triggered label

I just noticed there are a few deprecation warnings in lhcb-lcg-dev4lhcb I'd like to fix in this MR.

marked this merge request as draft

added 1 commit

• 17fcf688 - Fix deprecation warning in boost::filesystem

Compare with previous version

marked this merge request as ready

/ci-test

resolved all threads

merged

mentioned in commit ffdcbbb4

mentioned in merge request !3996 (merged)

Backported to run2-patches in !3996 (merged)

removed backport run2 label

mentioned in merge request !4854