fix(amazonq): update the bearer token in the language server every 5 minutes

[jpinkney-aws]

Problem

• When the bearer token updates in the background we never re-notify the language server

Solution

• update it every 5 minutes as a hack to unblock the pentest

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[hayemaxi]

Should dispose of it on deactivation/exception. Might cause tests or other things to hang later.

[jpinkney-aws]

good point, just updated it