message: master: bump version to v0.9
diff: <!-- This file is read by XES, which we use in our Release builds. -->
  <PropertyGroup Label="Version">
  <XesUseOneStoreVersioning>true</XesUseOneStoreVersioning>
  - <XesBaseYearForStoreVersion>2019</XesBaseYearForStoreVersion>
  + <XesBaseYearForStoreVersion>2020</XesBaseYearForStoreVersion>
  <VersionMajor>0</VersionMajor>
  - <VersionMinor>8</VersionMinor>
  + <VersionMinor>9</VersionMinor>
  <VersionInfoProductName>Windows Terminal</VersionInfoProductName>
  </PropertyGroup>
  </Project>
  