Bump azure/powershell from 1 to 2 (#837)

Bumps [azure/powershell](https://github.com/azure/powershell) from 1 to 2.
- [Release notes](https://github.com/azure/powershell/releases)
- [Commits](https://github.com/azure/powershell/compare/v1...v2)

---
updated-dependencies:
- dependency-name: azure/powershell
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/release-tests.yml

@@ -21,7 +21,7 @@ jobs:
       - name: Pester Tests
         id: pester
         if: startsWith(github.head_ref, 'release')
-        uses: azure/powershell@v1
+        uses: azure/powershell@v2
         with:
           inlineScript: |
             Import-Module Pester -Force

.github/workflows/update-policy-china.yml

@@ -65,7 +65,7 @@ jobs:
           GITHUB_TOKEN: ${{ steps.generate-token.outputs.token }}
 
       - name: Update Policy Library
-        uses: azure/powershell@v1
+        uses: azure/powershell@v2
         with:
           inlineScript: |
             Write-Information "==> Running script..." -InformationAction Continue
@@ -82,7 +82,7 @@ jobs:
           Install-Module -Name 'ALZ' -Force
 
       - name: Update Policy Definition Bicep Input Files
-        uses: azure/powershell@v1
+        uses: azure/powershell@v2
         with:
           inlineScript: |
             cd ${{ github.workspace }}/${{ github.repository }}

.github/workflows/update-policy.yml

@@ -65,7 +65,7 @@ jobs:
           GITHUB_TOKEN: ${{ steps.generate-token.outputs.token }}
 
       - name: Update Policy Library
-        uses: azure/powershell@v1
+        uses: azure/powershell@v2
         with:
           inlineScript: |
             Write-Information "==> Running script..." -InformationAction Continue
@@ -82,7 +82,7 @@ jobs:
           Install-Module -Name 'ALZ' -Force
 
       - name: Update Policy Definition Bicep Input Files
-        uses: azure/powershell@v1
+        uses: azure/powershell@v2
         with:
           inlineScript: |
             cd ${{ github.workspace }}/${{ github.repository }}