Bump handlebars from 4.5.3 to 4.7.7 in /lambda-notes#41

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masterlambda-notes/frontend:masterfrom

dependabot/npm_and_yarn/lambda-notes/handlebars-4.7.7lambda-notes/frontend:dependabot/npm_and_yarn/lambda-notes/handlebars-4.7.7Copy head branch name to clipboard