Update issue templates using builder

.github/ISSUE_TEMPLATE/Bug_report.md

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+---
+name: Bug report
+about: If you're having an issue with installing
+
+---
+
+<!--
+
+Before opening an issue:
+
+- Check that the version of node-sass you're trying to install supports your version of Node by looking at the release page for that version https://github.com/sass/node-sass/releases
+- If you're running the latest verions of Node, you'll likely need the latest node-sass, we don't backport support to old versions of node-sass
+- Read the common workarounds in https://github.com/sass/node-sass/blob/master/TROUBLESHOOTING.md
+
+**When reporting an bug, YOU MUST PROVIDE THE FOLLOWING INFORMATION
+or your issue will be closed without discussion**
+-->
+
+- NPM version (`npm -v`):
+- Node version (`node -v`):
+- Node Process (`node -p process.versions`):
+- Node Platform (`node -p process.platform`):
+- Node architecture (`node -p process.arch`):
+- node-sass version (`node -p "require('node-sass').info"`):
+- npm node-sass versions (`npm ls node-sass`):

.github/ISSUE_TEMPLATE/Custom.md

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+---
+name: 'Security: Request/Hawk/Hoek is being flagged'
+about: We cannot address this till we drop support for Node < 6. Subscribe to 2355
+
+---
+
+See https://github.com/sass/node-sass/issues/2355 for the reason we can't upgrade the Request version that your security scanner is flagging.

.github/ISSUE_TEMPLATE/Feature_request.md

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+---
+name: Feature request
+about: Suggest an idea for this project
+
+---
+
+<!--
+
+Before you request a feature, please realize this project is a wrapper for
+LibSass so we can't add any language features here. If you want to add a feature
+to the Sass language, please open an issue on https://github.com/sass/sass/issues/new
+
+If you want a CLI feature, please make sure that it is supported by https://github.com/sass/sass
+
+Thanks for making node-sass better!
+
+-->