[jsoncons] Update to 0.176.0

[danielaparker]

Fixes danielaparker/jsoncons #519
Fixes danielaparker/jsoncons #509
Fixes danielaparker/jsoncons #520
Fixes danielaparker/jsoncons #521
Fixes danielaparker/jsoncons #518

• Changes comply with the maintainer guide.
• SHA512s are updated for each updated download.
• The "supports" clause reflects platforms that may be fixed by this new version.
• Any fixed CI baseline entries are removed from that file.
• Any patches that are no longer applied are deleted from the port's directory.
• The version database is fixed by rerunning ./vcpkg x-add-version --all and committing the result.
• Only one version is added to each modified port's versions file.

[Cheney-W]

@danielaparker
I don't understand why these comments need to be added. Are they really what you were expecting?

Fixes danielaparker/jsoncons https://github.com/microsoft/vcpkg/pull/519
Fixes danielaparker/jsoncons https://github.com/microsoft/vcpkg/pull/509
Fixes danielaparker/jsoncons https://github.com/microsoft/vcpkg/pull/520
Fixes danielaparker/jsoncons https://github.com/microsoft/vcpkg/pull/521
Fixes danielaparker/jsoncons https://github.com/microsoft/vcpkg/pull/518

[danielaparker]

@danielaparker I don't understand why these comments need to be added. Are they really what you were expecting?

Fixes danielaparker/jsoncons https://github.com/microsoft/vcpkg/pull/519
Fixes danielaparker/jsoncons https://github.com/microsoft/vcpkg/pull/509
Fixes danielaparker/jsoncons https://github.com/microsoft/vcpkg/pull/520
Fixes danielaparker/jsoncons https://github.com/microsoft/vcpkg/pull/521
Fixes danielaparker/jsoncons https://github.com/microsoft/vcpkg/pull/518

@Cheney-W, I was just trying to follow instructions with the pr to add any issues that this pr fixed, I've always done that. I don't know why it's substituting "https://github.com/microsoft/vcpkg/pull/" for my project. I don't think it did that before.

Obviously in this form the comments don't make sense.

[dg0yt]

I don't know why it's substituting "https://github.com/microsoft/vcpkg/pull/" for my project.

There was a stray before #.
But a vcpkg PR "fixing" another repo's PRs didn't look right, and your repo should document the fixed issues anyways.