chore(deps): update dependency snowballstemmer to v2

[renovate]

This PR contains the following updates:

Package	Update	Change	OpenSSF
snowballstemmer	major	==1.9.1 -> ==2.2.0

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Release Notes

snowballstem/snowball (snowballstemmer)

v2.2.0

Compare Source

v2.1.0

Compare Source

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[sourcery-ai]

Reviewer's Guide by Sourcery

This pull request updates the snowballstemmer dependency from version 1.2.1 to 2.2.0.

No diagrams generated as the changes look simple and do not need a visual representation.

File-Level Changes

Change	Details	Files
Updated the snowballstemmer dependency to the latest major version.	Updated the version of snowballstemmer from 1.2.1 to 2.2.0 in requirements.txt	docs/requirements.txt

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[sourcery-ai]

We have skipped reviewing this pull request. Here's why:

• It seems to have been created by a bot (hey, renovate[bot]!). We assume it knows what it's doing!
• We don't review packaging changes - Let us know if you'd like us to change this.