Easy dependency updates

[GCHQDeveloper581]

This PR is an attempt to bring dependencies more up to date by tackling the low-hanging fruit (see commit log for the actions taken).

packages explicitly not brought up to latest version:

Package	Reason
bcryptjs	requires code change
bootstrap	requires code change
bson	requires code change and tests fail with the most obvious/trivial changes
cbor	requires newer node version
cspell	requires newer node version
otpauth	requires newer node version
webpack-dev-server	requires newer node version