Bump acorn from 6.1.1 to 6.4.1 in /src/main/resources/web#3

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dependabot/npm_and_yarn/src/main/resources/web/acorn-6.4.1gmdworkspace/r2dbc-rsocket-playground:dependabot/npm_and_yarn/src/main/resources/web/acorn-6.4.1Copy head branch name to clipboard