ci: unshallow clone for GitVersion

GitVersion.MsBuild fails on shallow clones ('Repository is a shallow
clone. Git repositories must contain the full history.') because it
walks the git log to compute the SemVer version.

Drop --depth 1 from both the PR ref fetch and the submodule update
so the runner's working tree has full history. The repo is small
enough that the cost is negligible.

.forgejo/workflows/buildAndTest.yml

@@ -46,10 +46,10 @@ jobs:
         git clone https://forgejo.pschneider.fr/notazof/yavsc.git _src
         cd _src
         if [ -n "${GITHUB_REF:-}" ]; then
-          git fetch --depth 1 origin "$GITHUB_REF"
+          git fetch origin "$GITHUB_REF"
           git checkout FETCH_HEAD
         fi
-        git submodule update --init --recursive --depth 1
+        git submodule update --init --recursive
         echo "Checked out at $(git rev-parse HEAD) on $(git branch --show-current 2>/dev/null || echo detached HEAD)"
     - name: Restore dependencies
       run: cd /src/_src && dotnet restore