Update nuget-publish.yml

UPdated SBOM

Author: NavneetHegde

.github/workflows/nuget-publish.yml

@@ -48,11 +48,18 @@ jobs:
         dotnet new tool-manifest
         dotnet tool install CycloneDX
     
-    - name: Generate SBOM
+    - name: Generate SBOM for latest tag on branch
       run: |
         git fetch --tags
-        VERSION=$(git describe --tags --abbrev=0)
-        echo "Latest tag: $VERSION"
+        BRANCH_NAME=$(git rev-parse --abbrev-ref HEAD)
+        echo "Current branch: $BRANCH_NAME"
+    
+        VERSION=$(git tag --merged $BRANCH_NAME --sort=-v:refname | head -n1)
+        if [ -z "$VERSION" ]; then
+          VERSION=$(git rev-parse --short HEAD)
+        fi
+        echo "Version for SBOM: $VERSION"
+    
         mkdir -p sbom/$VERSION
         dotnet tool run dotnet-CycloneDX OpenCode/OpenCode.csproj -o sbom/$VERSION -f json