Update emscripten-core to add /lib to rpath in emscripten-6x

[ianthomas23]

Template B: Checklist for updating a package

• ⚠️ Bump build number if the version remains unchanged
• Or reset build number to 0 if updating the package to a newer version

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PR Formatting

• PR title follows format: Add [package-name] or Update [package-name] to [version]
• PR description includes:
  • Version being added/updated
  • Any special build considerations or patches applied

Package Details

• Package Name: emscripten-core
• Version: 6.0.8

Build Notes

This allows client packages of openblas such as scipy to find the /lib/libopenblas.so at runtime. Without it we would have to add a similar change to specific recipes that need it.

[IsabelParedes]

Looks good. Thanks!