Bump "Licensed" version in dependency license check workflow (#266)

The version of the "Licensed" tool for use in the GitHub Actions workflow is defined via the "licensee/setup-licensed"
action's `version` input.

Previously the action was configured to install version 3.x of the action. That version is significantly outdated. The
workflow is hereby updated to use the latest version of Licensed.

Author: per1234

.github/workflows/check-go-dependencies-task.yml

@@ -82,7 +82,7 @@ jobs:
         uses: licensee/[email protected]
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
-          version: 3.x
+          version: 5.x
 
       - name: Install Go
         uses: actions/setup-go@v5
@@ -141,7 +141,7 @@ jobs:
         uses: licensee/[email protected]
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
-          version: 3.x
+          version: 5.x
 
       - name: Install Go
         uses: actions/setup-go@v5