Bump follow-redirects from 1.15.2 to 1.15.6 in /tests/frontend/e2e#822

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dependabot/npm_and_yarn/tests/frontend/e2e/follow-redirects-1.15.6MetaCell/NetPyNE-UI:dependabot/npm_and_yarn/tests/frontend/e2e/follow-redirects-1.15.6Copy head branch name to clipboard