Update UI Test certificate, expires 8/30/2022

UITests/UITests.App/UITests.App.csproj

@@ -22,7 +22,7 @@
     <GenerateTestArtifacts>True</GenerateTestArtifacts>
     <HoursBetweenUpdateChecks>0</HoursBetweenUpdateChecks>
     <PackageCertificateKeyFile>UITests.App.pfx</PackageCertificateKeyFile>
-    <PackageCertificateThumbprint>24D62F3B13B8B9514EAD9C4DE48CC30F7CC6151D</PackageCertificateThumbprint>
+    <PackageCertificateThumbprint>A39FFC9A7EDC3BC1F62B1FC6409AD9EDD84E8CF0</PackageCertificateThumbprint>
     <AppxPackageSigningTimestampDigestAlgorithm>SHA256</AppxPackageSigningTimestampDigestAlgorithm>
     <GenerateAppxPackageOnBuild>true</GenerateAppxPackageOnBuild>
     <AppxPackageSigningEnabled>True</AppxPackageSigningEnabled>