fix(workflow): correct bolt task command in test-upgrade-legacy job

- Add missing bundle exec to bolt task run command
- Ensure correct modulepath is specified for bolt execution
- Redirect output to peadm_config.json for yq processing

Author: CoMfUcIoS

.github/workflows/test-upgrade-legacy.yaml

@@ -128,7 +128,11 @@ jobs:
         run: |
           primary=$(yq '.groups[].targets[] | select(.vars.role == "primary") | .name' spec/fixtures/litmus_inventory.yaml)
           compiler=$(yq '.groups[].targets[] | select(.vars.role == "compiler") | .name' spec/fixtures/litmus_inventory.yaml | head -n 1)
-          bolt task run peadm::get_peadm_config -t $primary --no-host-key-check --format json > peadm_config.json
+          bundle exec bolt task run peadm::get_peadm_config \
+            -t $primary \
+            --modulepath spec/fixtures/modules \
+            --no-host-key-check \
+            --format json > peadm_config.json
           legacy_compiler=$(yq '.items[0].value.params.legacy_compilers[0]' peadm_config.json)
           if [ "$compiler" != "$legacy_compiler" ]; then
             echo "Compiler conversion failed"