chore(deps): bump next from 14.0.0 to 15.5.21 in /tools/hedgebox-dummy#4

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dependabot/npm_and_yarn/tools/hedgebox-dummy/next-15.5.21agentcathq/posthog:dependabot/npm_and_yarn/tools/hedgebox-dummy/next-15.5.21Copy head branch name to clipboard