build(deps): bump zyborg/gh-action-buildnum from 1 to 2

Bumps [zyborg/gh-action-buildnum](https://github.com/zyborg/gh-action-buildnum) from 1 to 2.
- [Release notes](https://github.com/zyborg/gh-action-buildnum/releases)
- [Commits](zyborg/gh-action-buildnum@v1...v2)

---
updated-dependencies:
- dependency-name: zyborg/gh-action-buildnum
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/build_and_deploy_azure.yml

@@ -39,7 +39,7 @@ jobs:
 
     - name: generate build number
       id: build_number
-      uses: zyborg/gh-action-buildnum@v1.2.0
+      uses: zyborg/gh-action-buildnum@v2
       with:
         gist_token: ${{ secrets.GIST_TOKEN }}
 
@@ -107,7 +107,7 @@ jobs:
     needs: build_and_test
     steps:
       - name: get existing build number
-        uses: zyborg/gh-action-buildnum@v1
+        uses: zyborg/gh-action-buildnum@v2
         id: lastBuildNum
         with:
           gist_token: ${{ secrets.GIST_TOKEN }}