fix(deps): update dependency ketting to v6.2.0

[pactflow-renovate-bot]

This PR contains the following updates:

Package	Change	Age	Confidence
ketting	6.0.4 -> 6.2.0

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Release Notes

badgateway/ketting (ketting)

v6.2.0

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• Updated fetch-mw-oauth2, which has a few new features: * Fixed a race
  condition where two 401's in quick succession could result in two OAuth2
  refresh requests, ultimately causing 1 to fail. * Preemptively refresh if we
  know when the access token will expire.

v6.1.4

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• #​302: Templated links without template data don't work.

v6.1.3

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• Add a getCache() function to Resource, which allows a user to get the
  latest Resource State in a synchronous manner.
• #​292: Parse Siren's 'value' property in action fields.
• fetch-mw-oauth2 dependency had a bug related to refreshing tokens. This
  release ships with a version without that bug.

v6.1.2

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• Update the fetch-mw-oauth2 dependency, which adds an onAuthError event.

v6.1.0

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• Large changes in the actions/form system. This should still be considered
  experimental and could cause some minor BC breaks.
• Actions are now effectively a serialization of a HTML form, and it's now
  possible to introspect information such as the target, method,
  contentType, etc.
• Some refactoring in the State objects, simplifiying these significantly.

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