Disable Biome format linter in super-linter (#18)

Disables the Biome format linter in the super-linter workflow.

## Changes

- Added `VALIDATE_BIOME_FORMAT: false` to `.github/workflows/Linter.yml`
environment variables

This prevents Biome's formatter from running during CI linting while
keeping other linters active (Prettier for JSON/Markdown/YAML remains
disabled as before).

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<details>

<summary>Original prompt</summary>

> Disable the Biome format linter


</details>



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Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: MariusStorhaug <17722253+MariusStorhaug@users.noreply.github.com>
Co-authored-by: Marius Storhaug <marstor@hotmail.com>

Author: Copilot

.github/workflows/Linter.yml

@@ -28,6 +28,7 @@ jobs:
         uses: super-linter/super-linter@d5b0a2ab116623730dd094f15ddc1b6b25bf7b99 # v8.3.2
         env:
           GITHUB_TOKEN: ${{ github.token }}
+          VALIDATE_BIOME_FORMAT: false
           VALIDATE_JSON_PRETTIER: false
           VALIDATE_MARKDOWN_PRETTIER: false
           VALIDATE_YAML_PRETTIER: false