Polymake.jl 0.11.5 released

Today Polymake.jl 0.11.5 has been released.

Diff since v0.11.4

Merged pull requests:

• Added list_properties(::BigObject) (#450) (@alexej-jordan)
• Bump Aqua compat (#451) (@lgoettgens)
• CI: use buildpkg@v1 (#452) (@benlorenz)
• CI: use concrete action version (#453) (@lgoettgens)
• polydb: add and test length for collection queries (#454) (@benlorenz)
• cxxwrap: support version 0.14, keep support for 0.13 (#455) (@benlorenz)