Add missing run

Author: stevebux

.github/actions/build-proxies/action.yml

@@ -66,6 +66,7 @@ runs:
 
     - name: Set APIM_ENV
       shell: bash
+      run: |
         if [[ $APIM_ENV == *-pr ]]; then
           echo "Removing pr suffix from APIM_ENV after building OAS and calling proxygen"
           APIM_ENV=$(echo "$APIM_ENV" | sed 's/-pr$//')