add intro banner about sys requirements (#18804)

bwestover · web-flow · commit 597397af48c2 · 2021-04-15T09:50:13.000-04:00
diff --git a/data/release-notes/3-0/5.yml b/data/release-notes/3-0/5.yml
@@ -1,4 +1,5 @@
 date: '2021-04-14'
+intro: The minimum infrastructure requirements have increased for {% data variables.product.prodname_ghe_server %} 3.0+. For more information, see "[About minimum requirements for GitHub Enterprise Server 3.0 and later](/admin/enterprise-management/upgrading-github-enterprise-server#about-minimum-requirements-for-github-enterprise-server-30-and-later)."
 sections:
   security_fixes:
     - Packages have been updated to the latest security versions.

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,5 @@`
`1`	`1`	`date: '2021-04-14'`
	`2`	`+intro: The minimum infrastructure requirements have increased for {% data variables.product.prodname_ghe_server %} 3.0+. For more information, see "[About minimum requirements for GitHub Enterprise Server 3.0 and later](/admin/enterprise-management/upgrading-github-enterprise-server#about-minimum-requirements-for-github-enterprise-server-30-and-later)."`
`2`	`3`	`sections:`
`3`	`4`	`security_fixes:`
`4`	`5`	`- Packages have been updated to the latest security versions.`