Updated images on environmental variable page

[nataliefiann]

What are you changing in this pull request and why?

I've updated the images on the environmental variable page as part of the UI project

I've updated the images under the following sections:

• Overriding environment variables at the job level (the first image)
• Overriding environment variables at the personal level (the three images under this section)

Checklist

• I have reviewed the Content style guide so my content adheres to these guidelines.
• The topic I'm writing about is for specific dbt version(s) and I have versioned it according to the version a whole page and/or version a block of content guidelines.
• I have added checklist item(s) to this list for anything anything that needs to happen before this PR is merged, such as "needs technical review" or "change base branch."
• The content in this PR requires a dbt release note, so I added one to the release notes page.

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🚀 Deployment available! Here are the direct links to the updated files:

• https://docs-getdbt-com-git-nfiann-img-sweep-dbt-labs.vercel.app/docs/build/environment-variables

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Name	Status	Preview	Updated (UTC)
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[mirnawong1]

thanks @nataliefiann , am i right in thinking it's only the ide refresh that's been changed here and the gif removed? approved

[nataliefiann]

PR description:

I've updated the images on the environmental variable page as part of the UI project

I've updated the images under the following sections:

• Overriding environment variables at the job level (the first image)
• Overriding environment variables at the personal level (the three images under this section)