chore: Update README to reflect new version

Author: jdcargile

README.md

@@ -23,7 +23,7 @@ jobs:
       - uses: actions/checkout@v2
       # this is the new step using the ms-teams-notification action
       - name: Notify dedicated teams channel
-        uses: jdcargile/ms-teams-notification@v1.2
+        uses: jdcargile/ms-teams-notification@v1.3
         with:
           github-token: ${{ github.token }} # this will use the runner's token.
           ms-teams-webhook-uri: ${{ secrets.MS_TEAMS_WEBHOOK_URI }}