build: update karma to version ~6.1.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
karma (source)	~6.0.0 -> ~6.1.0

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Release Notes

karma-runner/karma

v6.1.0

Compare Source

Features

• config: improve karma.config.parseConfig error handling (#​3635) (9dba1e2)

6.0.4 (2021-02-01)

Bug Fixes

• cli: temporarily disable strict parameters validation (#​3641) (9c755e0), closes #​3625
• client: fix a false positive page reload error in Safari (#​3643) (2a57b23)
• ensure that Karma supports running tests on IE 11 (#​3642) (dbd1943)

6.0.3 (2021-01-27)

Bug Fixes

• plugins: refactor instantiatePlugin from preproprocessor (#​3628) (e02858a)

6.0.2 (2021-01-25)

Bug Fixes

• avoid ES6+ syntax in client scripts (#​3629) (6629e96), closes #​3630

6.0.1 (2021-01-20)

Bug Fixes

• server: set maxHttpBufferSize to the socket.io v2 default (#​3626) (69baddc), closes #​3621
• restore customFileHandlers provider (#​3624) (25d9abb)

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Renovate configuration

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