Bump versions of kurbo,cairo, pango deps

[flxzt]

Simply bumping the versions seems to be enough, there are no API updates that would require any changes in piet this time (see changelog here)

[xStrom]

As a first step we need to get the CI passing. I have done the required work to have master pass CI, which is in #573. It still requires review. I invited you as a collaborator so that you can review and approve that.

[xStrom]

Alright now with #573 merged this PR here needs to be rebased on master.

[flxzt]

Okay, I rebased on master and applied clippy's suggestions to replace a deprecated function from kurbo.
From my side this is now ready.

[xStrom]

Thanks!

We have a general policy that the PR author presses the merge button after approvals. This is because the author might want additional reviews or to make additional changes.

So go ahead and press the merge button when you're ready.

[flxzt]

Alright, thank you for making the effort to get this merged!