Update gittools/actions action to v0.9.7

Author: renovate-bot

.github/workflows/build.yml

@@ -9,10 +9,10 @@ jobs:
       - uses: actions/checkout@v2
         with:
           fetch-depth: 0
-      - uses: gittools/actions/gitversion/[email protected].6
+      - uses: gittools/actions/gitversion/[email protected].7
         with:
           versionSpec: '5.5.x'
-      - uses: gittools/actions/gitversion/[email protected].6
+      - uses: gittools/actions/gitversion/[email protected].7
         id: gitversion
       - if: steps.gitversion.outputs.preReleaseLabel != ''
         run: npm version --no-git-tag-version ${{steps.gitversion.outputs.nuGetVersion}}-${{steps.gitversion.outputs.shortSha}}