fix(deps): update dependency qs to v6.12.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
qs	6.11.2 -> 6.12.0

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Release Notes

ljharb/qs (qs)

v6.12.0

Compare Source

• [New] parse/stringify: add decodeDotInKeys/encodeDotKeys options (#​488)
• [New] parse: add duplicates option
• [New] parse/stringify: add allowEmptyArrays option to allow [] in object values (#​487)
• [Refactor] parse/stringify: move allowDots config logic to its own variable
• [Refactor] stringify: move option-handling code into normalizeStringifyOptions
• [readme] update readme, add logos (#​484)
• [readme] stringify: clarify default arrayFormat behavior
• [readme] fix line wrapping
• [readme] remove dead badges
• [Deps] update side-channel
• [meta] make the dist build 50% smaller
• [meta] add sideEffects flag
• [meta] run build in prepack, not prepublish
• [Tests] parse: remove useless tests; add coverage
• [Tests] stringify: increase coverage
• [Tests] use mock-property
• [Tests] stringify: improve coverage
• [Dev Deps] update @​ljharb/eslint-config , aud, has-override-mistake, has-property-descriptors, mock-property, npmignore, object-inspect, tape
• [Dev Deps] pin glob, since v10.3.8+ requires a broken jackspeak
• [Dev Deps] pin jackspeak since 2.1.2+ depends on npm aliases, which kill the install process in npm < 6

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