fix(deps): update dependency axios to ^1.6.8 for gatsby-remark-images-contentful

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
axios (source)	^1.6.4 -> ^1.6.8

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Release Notes

axios/axios (axios)

v1.6.8

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Bug Fixes

• AxiosHeaders: fix AxiosHeaders conversion to an object during config merging (#​6243) (2656612)
• import: use named export for EventEmitter; (7320430)
• vulnerability: update follow-redirects to 1.15.6 (#​6300) (8786e0f)

Contributors to this release

• Jay
• Dmitriy Mozgovoy
• Mitchell
• Emmanuel
• Lucas Keller
• Aditya Mogili
• Miroslav Petrov

v1.6.7

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Bug Fixes

• capture async stack only for rejections with native error objects; (#​6203) (1a08f90)

Contributors to this release

• Dmitriy Mozgovoy
• zhoulixiang

v1.6.6

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Bug Fixes

• fixed missed dispatchBeforeRedirect argument (#​5778) (a1938ff)
• wrap errors to improve async stack trace (#​5987) (123f354)

Contributors to this release

• Ilya Priven
• Zao Soula

v1.6.5

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Bug Fixes

• ci: refactor notify action as a job of publish action; (#​6176) (0736f95)
• dns: fixed lookup error handling; (#​6175) (f4f2b03)

Contributors to this release

• Dmitriy Mozgovoy
• Jay

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