docs: ambiguous supported versions in security policy

[linusrachlis]

Hello, would it be possible to clarify whether v2.9.x is currently supported for security updates?

The current security policy says 2.10.x is supported and <2.9 is not (i.e. 2.8.x and lower), but I'm not sure about 2.9.x itself. I'm guessing perhaps it was meant to say "<= 2.9" instead, but I'm not sure.

pyjwt/SECURITY.md

Lines 9 to 10 in 3ebbb22

	| 2.10.x | :white_check_mark: |
	| < 2.9 | :x: |

Many thanks ❤️

Expected Result

Support policy for all versions is clear.

Actual Result

Support policy for 2.9 is unclear.

Reproduction Steps

N/A

System Information

N/A

[github-actions]

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