[Snyk] Security upgrade express-session from 1.17.0 to 1.18.2

[camjc]

Snyk has created this PR to fix 1 vulnerabilities in the npm dependencies of this project.

Snyk changed the following file(s):

• package.json
• package-lock.json

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score
	Improper Handling of Unexpected Data Type SNYK-JS-ONHEADERS-10773729	516

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