Bump minivpt lower bound further

[jmid]

minivpt is a dependency in #24677 which is now causing lbvs_consent compilation to fail with:

[ERROR] The compilation of lbvs_consent.2.1.1 failed at "dune build -p lbvs_consent -j 255".

#=== ERROR while compiling lbvs_consent.2.1.1 =================================#
# context              2.2.0~alpha3~dev | linux/x86_64 | ocaml-base-compiler.4.03.0 | pinned(https://github.com/UnixJunkie/consent/archive/v2.1.1.tar.gz)
# path                 ~/.opam/4.03/.opam-switch/build/lbvs_consent.2.1.1
# command              ~/.opam/opam-init/hooks/sandbox.sh build dune build -p lbvs_consent -j 255
# exit-code            1
# env-file             ~/.opam/log/lbvs_consent-7-697f60.env
# output-file          ~/.opam/log/lbvs_consent-7-697f60.out
### output ###
# File "src/dune", line 6, characters 49-56:
# 6 |   (libraries dolog batteries bitv parmap str zip minivpt cpm))
#                                                      ^^^^^^^
# Error: Library "minivpt" not found.

I believe this is an issue with the obuild version, not making the name minivpt visible to dune.
Locally I can reproduce the issue - and bumping the obuild requirement to 0.1.0 solved it.
The change should benefit other packages that use dune and would want to depend on minivpt.

For context, #24680 added the first obuild lower bound.

While I was at it, I removed a period in the synopsis to make the opam files lint cleanly.

[jmid]

The only two CI failures are from lbvs_consent which the ongoing #24677 is trying to address.

[mseri]

Thanks