use modern heroku stack

mansona · mansona · commit 7003577967f6 · 2021-05-13T17:49:28.000+01:00
diff --git a/app.json b/app.json
@@ -24,5 +24,6 @@
     {
       "url": "https://buildpack-registry.s3.amazonaws.com/buildpacks/aedev/emberjs.tgz"
     }
-  ]
+  ],
+  "stack": "heroku-20"
 }

Original file line number	Diff line number	Diff line change
`@@ -24,5 +24,6 @@`
`24`	`24`	`{`
`25`	`25`	`"url": "https://buildpack-registry.s3.amazonaws.com/buildpacks/aedev/emberjs.tgz"`
`26`	`26`	`}`
`27`		`- ]`
	`27`	`+ ],`
	`28`	`+ "stack": "heroku-20"`
`28`	`29`	`}`