docs: add release notes for v5.8.10

Author: github-actions[bot]

release_notes/v5.8.10.md

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+## [5.8.10](https://github.com/NHSDigital/eps-common-workflows/compare/v5.8.9...v5.8.10) (2026-03-26)
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+
+### Upgrade
+
+* [dependabot] - bump @aws-sdk/client-cloudformation from 3.1013.0 to 3.1018.0 (#110) ([333ba63](https://github.com/NHSDigital/eps-common-workflows/commit/333ba6389b3d41480f446aa56ad484b49f33c15e))
+* [dependabot] - bump @aws-sdk/client-lambda from 3.1013.0 to 3.1018.0 (#111) ([fbf0b67](https://github.com/NHSDigital/eps-common-workflows/commit/fbf0b677e6a41d20e85721758570b8f5faf7b755))
+
+## Info
+[Release workflow run](https://github.com/NHSDigital/eps-common-workflows/actions/runs/23620707654) - Workflow ID: 23620707654
+
+It was initialized by [eps-autoapprove-dependabot[bot]](https://github.com/apps/eps-autoapprove-dependabot)
+
+