Bump stdpp.

6 jobs for master in 15 minutes and 54 seconds
Status Job ID Name Coverage
  Build
passed #39228
fp
build-coq.8.10.dev

00:13:22

passed #39232
fp
build-coq.8.7.2

00:08:00

passed #39231
fp
build-coq.8.8.2

00:07:50

passed #39230
fp-timing
build-coq.8.9.0

00:07:00

passed #39229
fp
build-coq.8.9.1

00:08:24

passed #39227
fp
build-coq.dev

00:15:33