ci: Updated release prep to add copy around breaking changes (#3199)

Author: bizob2828

bin/templates/template.hbs

@@ -4,6 +4,8 @@
 {{#each noteGroups}}
 #### ⚠ {{title}}
 
+This version of the Node.js agent is a SemVer MAJOR update and contains the following breaking changes. MAJOR versions may drop support for language runtimes that have reached End-of-Life according to the maintainer. Additionally, MAJOR versions may drop support for and remove certain instrumentation. For more details on these changes please see the [migration guide](https://docs.newrelic.com/docs/apm/agents/nodejs-agent/installation-configuration/update-nodejs-agent/).
+
 {{#each notes}}
 * {{#if commit.scope}}**{{commit.scope}}:** {{/if}}{{text}}
 {{/each}}
@@ -18,4 +20,4 @@
 {{#each commits}}
 {{> commit root=@root}}
 {{/each}}
-{{/each}}
+{{/each}}

bin/test/conventional-changelog.test.js

@@ -55,6 +55,8 @@ const exampleCommit = {
 const exampleMarkdown = `### v1.0.0 (2020-04-03)
 #### ⚠ BREAKING CHANGES
 
+This version of the Node.js agent is a SemVer MAJOR update and contains the following breaking changes. MAJOR versions may drop support for language runtimes that have reached End-of-Life according to the maintainer. Additionally, MAJOR versions may drop support for and remove certain instrumentation. For more details on these changes please see the [migration guide](https://docs.newrelic.com/docs/apm/agents/nodejs-agent/installation-configuration/update-nodejs-agent/).
+
 * **thing:** updated Thing to prevent modifications to inputs
 
 #### Bug fixes