Update Footer Copy to Show GovTool

[bosko-m]

Update the footer text across the GovTool app from
© 2025 Intersect MBO
to
© 2025 GovTool.

Acceptance Criteria

• Footer text is updated on all pages of the GovTool app.
• No visual layout issues introduced by the text change.
• Confirm the new text is consistent across all networks (preview, preprod, mainnet).
• Year is updated automatically

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