Cortex-M backend: add cortex-m0plus to the trunk e2e CI matrix

.github/workflows/_test_cortex_m_e2e.yml

@@ -12,7 +12,7 @@ on:
         required: true
         type: string
       targets:
-        description: 'JSON array of cortex-m target CPUs to build the runner for, e.g. ["cortex-m55", "cortex-m7"]'
+        description: 'JSON array of cortex-m target CPUs to build the runner for, e.g. ["cortex-m55", "cortex-m7", "cortex-m0plus"]'
         required: false
         type: string
         default: '["cortex-m55"]'

.github/workflows/trunk.yml

@@ -1075,4 +1075,4 @@ jobs:
     uses: ./.github/workflows/_test_cortex_m_e2e.yml
     with:
       models: '["mv2", "mv3"]'
-      targets: '["cortex-m55", "cortex-m7"]'
+      targets: '["cortex-m55", "cortex-m7", "cortex-m0plus"]'