chore(deps): update skyfield-data requirement from >=3,<5 to >=3,<6

[dependabot[bot]]

Updates the requirements on skyfield-data to permit the latest version.

Release notes

Sourced from skyfield-data's releases.

The 2023 updates

• Upgraded finals2002A.all file, which has expired. Thanks a lot to @​ReimarBauer for the PR, and @​thierry-FreeBSD for the bug report (#29)
• Dropped support for Python 3.6.
• Confirm support for Python 3.11.

Changelog

Sourced from skyfield-data's changelog.

5.0.0 (2023-04-23)

• Upgraded finals2002A.all file, which has expired. Thanks a lot to @​ReimarBauer for the PR, and @​thierry-FreeBSD for the bug report.
• Dropped support for Python 3.6.
• Confirm support for Python 3.11.

4.0.0 (2022-02-17)

• Switching from Travis/CircleCI for tests and CI to Github Actions (inspired by #24, thank you a lot, @​Deuchnord).
• Dropped support for Python 3.5.
• Confirmed support for Python 3.10.
• NOTE: Temporarily skipped Python 2.6 tests. Since version 3.0.0, the runtime code hasn't been modified, so this means that it should still be compatible, although... We can't prove it.

Data updates

Data files were downloaded on 2022-12-15.

• Upgrade finals2000A.all file, which has expired, thanks @​6ruff for the bug report (#20).

3.0.0 (2020-12-18)

Important changes

• Using finals2000A.all file for timescale computations (#14).
• Removed Leap_Second.dat file from the archive. They're not used by Skyfield anymore (#14).
• Adapted tests for warnings to point at the de421.bsp file (#14).
• Removed references to Leap_Second.dat from doc and test files (#14).
• Confirmed support of Python 3.9 (#15).

Data updates

Data files were downloaded on 2020-12-18.

• Downloaded the finals2000A.all data file.

2.0.0 (2020-12-11)

Important changes

• Removed deltat.data & deltat.preds files from the archive. They're not used by Skyfield anymore, as of v1.31 (October 2020), since they were not updated by the providers. Skyfield now uses a builtin, the iers.npz file, embedded into the library.
• Adapted tests for warnings to point at the Leap_Second.dat file.
• Removed references to the deltat.* files in the docs and test files.

Data updates

Data files were downloaded on 2020-12-11.

• Updated the Leap_Second.dat data file.

... (truncated)

Commits

• e981253 v5.0.0
• 43592c4 Merge pull request #34 from brunobord/python3.11-3.10-support
• 87cf7d8 Confirm support for Python 3.11
• ca85154 Confirm suport of Python 3.10 through tox tests
• 3eda97b Merge pull request #33 from brunobord/update-2023-remove-py36-support
• 0e86697 Remove Python 3.6 compatibility
• 3a29938 File updates for 2023
• 65a2768 Back to dev -> 4.1.0.dev0
• c80dc9d v4.0.0
• 300cf41 Merge pull request #21 from brunobord/upgrade-finals2000A-february-2022
• Additional commits viewable in compare view

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