[NDR-56] Add continue-on-error flag to Terraform format, validate, and plan steps for improved workflow resilience

Author: MatthewMoore-NHS

.github/workflows/terraform-dev-to-main-ci.yml

@@ -62,10 +62,12 @@ jobs:
       id: fmt
       run: terraform fmt -check
       working-directory: ./infrastructure
+      continue-on-error: true
 
     - name: terraform validate
       id: validate
       run: terraform validate -no-color
+      continue-on-error: true
 
     - name: Terraform Plan
       id: plan
@@ -75,6 +77,7 @@ jobs:
         echo "summary=$(grep -E 'Plan: [0-9]+ to add, [0-9]+ to change, [0-9]+ to destroy\.|No changes\. Your infrastructure matches the configuration\.' tfplan.txt | sed 's/.*No changes\. Your infrastructure matches the configuration/Plan: no changes/g' | sed 's/.*Plan: //g' | sed 's/\..*//g')" >> $GITHUB_OUTPUT
       working-directory: ./infrastructure
       shell: bash
+      continue-on-error: true
 
     - name: Truncate Plan Output
       id: plan-truncated