Updated sample and readme

samples/react-graph-app-secret-expiration/.devcontainer/devcontainer.json

@@ -1,7 +1,7 @@
 // For more information on how to run this SPFx project in a VS Code Remote Container, please visit https://aka.ms/spfx-devcontainer
 {
-	"name": "SPFx 1.14.0",
-	"image": "docker.io/m365pnp/spfx:1.14.0",
+	"name": "SPFx 1.15.0",
+	"image": "docker.io/m365pnp/spfx:1.15.0",
 	// Set *default* container specific settings.json values on container create.
 	"settings": {},
 	// Add the IDs of extensions you want installed when the container is created.

samples/react-graph-app-secret-expiration/README.md

@@ -9,7 +9,7 @@ I got the idea from this great article [Use Power Automate to Notify of Upcoming
 
 ## Compatibility
 
-![SPFx 1.15](https://img.shields.io/badge/SPFx-1.14-green.svg)
+![SPFx 1.15](https://img.shields.io/badge/SPFx-1.15-green.svg)
 ![Node.js v14 | v12](https://img.shields.io/badge/Node.js-v14%20%7C%20v12-green.svg)
 ![Compatible with SharePoint Online](https://img.shields.io/badge/SharePoint%20Online-Compatible-green.svg)
 ![Does not work with SharePoint 2019](https://img.shields.io/badge/SharePoint%20Server%202019-Incompatible-red.svg "SharePoint Server 2019 requires SPFx 1.4.1 or lower")

samples/react-graph-app-secret-expiration/assets/sample.json

@@ -9,7 +9,7 @@
             "This sample web part shows the list of your applications registered in Azure AD along with their associated client secret/certificate expiration date."
         ],
         "creationDateTime": "2021-09-17",
-        "updateDateTime": "2022-03-14",
+        "updateDateTime": "2022-07-07",
         "products": [
             "SharePoint"
         ],
@@ -20,7 +20,7 @@
             },
             {
                 "key": "SPFX-VERSION",
-                "value": "1.14.0"
+                "value": "1.15.0"
             },
             {
                 "key": "PNPCONTROLS",