vdirsyncer: generate man page, disable broken tests

[rookiejet]

Testing the changes

• I tested the changes in this PR: briefly

Notes

The HTTP storage tests mock requests via aioresponses, which does not pass the stream_writer keyword argument required by aiohttp >= 3.10.2, so every mocked response fails with:

TypeError: ClientResponse.__init__() missing 1 required
keyword-only argument: 'stream_writer'

aioresponses upstream has no release with the fix yet (pnuckowski/aioresponses#288). Re-enable these tests once a compatible aioresponses release is packaged (or if vdirsyncer upstream switches to aioresponses-ng).

[ahesford]

• Please ping template maintainers (me, in this case) when you modify their packages.
• Please combine this with an update to the latest version.

[rookiejet]

Noted. PR scope expanded a bit from the vdirsyncer version bump:

• Added missing tenacity dependency to vdirsyncer and updated tenacity to 9.1.4 (tenacity>=9.0.0 required since 0.21.0).
• Moved test-only deps out of python3-tenacity depends into checkdepends, dropped python3-Sphinx as that was an obsolete runtime dependency.
• Checked python3-plotly, python3-stamina as they depend on python3-tenacity
  • python3-stamina test suite runs and completes (311 passed, 2 skipped) with minversion bypass
  • python3-plotly-5.24.1 has no test suite, so would need a user to test (@pfpulux). During pkg build verify-python-deps flagged missing dependency python3-packaging, added to template.