Run 'dart pub get' before analysis in CI

Adds 'dart pub get' to the CI workflow before running 'dart analyze' for non-tagged builds to ensure dependencies are installed prior to analysis.

Author: FeodorFitsner

.github/workflows/ci.yml

@@ -300,6 +300,7 @@ jobs:
             if [[ "$GITHUB_REF" == refs/tags/* ]]; then
               dart pub publish --force
             else
+              dart pub get
               dart analyze
             fi
             popd >/dev/null