Adjust Changelog for 0.6.17

Merge pull request #78 from NNPDF/relax_restrictions

Relax dependency restrictions

Merge pull request #70 from N3PDF/toyff_fix

fix the toyFF and add tests

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Merge pull request #61 from N3PDF/remove-py-upper-limit

Allow py3.12

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Merge pull request #51 from N3PDF/update_theory

adding new keys to theory template

Provide default nf0 and nfref

restored Qedref

Run poetry update