Fix broken LinkedIn share and Copy Link buttons - #310

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4, conda-incubator/setup-miniconda@v3. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

Analytics refresh failed (ValueError); previous snapshot left unchanged. See docs/analytics.md for troubleshooting.

Analytics refresh failed (ValueError); previous snapshot left unchanged. See docs/analytics.md for troubleshooting.

Analytics refresh failed (ValueError); previous snapshot left unchanged. See docs/analytics.md for troubleshooting.

Analytics refresh failed (ValueError); previous snapshot left unchanged. See docs/analytics.md for troubleshooting.

Analytics refresh failed (ValueError); previous snapshot left unchanged. See docs/analytics.md for troubleshooting.

Analytics refresh failed (ValueError); previous snapshot left unchanged. See docs/analytics.md for troubleshooting.

Analytics refresh failed (ValueError); previous snapshot left unchanged. See docs/analytics.md for troubleshooting.

Analytics refresh failed (ValueError); previous snapshot left unchanged. See docs/analytics.md for troubleshooting.

Analytics refresh failed (ValueError); previous snapshot left unchanged. See docs/analytics.md for troubleshooting.

Analytics refresh failed (ValueError); previous snapshot left unchanged. See docs/analytics.md for troubleshooting.

'nodefaults' channel detected: will remove 'defaults' if added implicitly. In the future, 'nodefaults' to remove 'defaults' won't be supported. Please set 'conda-remove-defaults' = 'true' in setup-miniconda to remove this warning.