Bump gittools/actions from 2.0.0 to 3.0.0 (#316)

Bumps [gittools/actions](https://github.com/gittools/actions) from 2.0.0 to 3.0.0.
- [Release notes](https://github.com/gittools/actions/releases)
- [Commits](GitTools/actions@v2.0.0...v3.0.0)

---
updated-dependencies:
- dependency-name: gittools/actions
  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>

Author: dependabot[bot]

.github/workflows/main.yml

@@ -13,11 +13,11 @@ jobs:
       with:
         fetch-depth: 0 #fetch-depth is needed for GitVersion             
     - name: Install GitVersion #Install and calculate the new version with GitVersion 
-      uses: gittools/actions/gitversion/setup@v2.0.0
+      uses: gittools/actions/gitversion/setup@v3.0.0
       with:
         versionSpec: 5.x
     - name: Determine Version
-      uses: gittools/actions/gitversion/execute@v2.0.0
+      uses: gittools/actions/gitversion/execute@v3.0.0
       id: gitversion # step id used as reference for output values
     - name: Display GitVersion outputs
       run: |