fix: session expiration extended to 2 weeks

[kidunot89]

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What does this implement/fix? Explain your changes.

• Session token expiration set to 2 weeks from creation.
• If the token is used within a day of a expiration an update token is dispensed.

Does this close any currently open issues?

Fixes #519

Any relevant logs, error output, GraphiQL screenshots, etc?

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Any other comments?

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Where has this been tested?

• WooGraphQL Version: …
• WPGraphQL Version: …
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