fix: deps/npm/node_modules/buffer/package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-ADMZIP-1065796
- https://snyk.io/vuln/SNYK-JS-ASYNC-2441827
- https://snyk.io/vuln/SNYK-JS-GLOBPARENT-1016905
- https://snyk.io/vuln/SNYK-JS-GOT-2932019
- https://snyk.io/vuln/SNYK-JS-HANDLEBARS-1056767
- https://snyk.io/vuln/SNYK-JS-HANDLEBARS-1279029
- https://snyk.io/vuln/SNYK-JS-HANDLEBARS-480388
- https://snyk.io/vuln/SNYK-JS-HANDLEBARS-534478
- https://snyk.io/vuln/SNYK-JS-HANDLEBARS-534988
- https://snyk.io/vuln/SNYK-JS-HANDLEBARS-567742
- https://snyk.io/vuln/SNYK-JS-HIGHLIGHTJS-1045326
- https://snyk.io/vuln/SNYK-JS-HIGHLIGHTJS-1048676
- https://snyk.io/vuln/SNYK-JS-HTTPCACHESEMANTICS-3248783
- https://snyk.io/vuln/SNYK-JS-SERIALIZEJAVASCRIPT-536840
- https://snyk.io/vuln/SNYK-JS-SERIALIZEJAVASCRIPT-570062
- https://snyk.io/vuln/SNYK-JS-XML2JS-5414874

Author: snyk-bot