Fix configure-aws-credentials when network_name has dashes (#743)

The configure-aws-credentials action errors if network_name has dashes
in it e.g. if network_name = "non-prod". This issue was discovered on a project.

.github/actions/configure-aws-credentials/action.yml

@@ -48,7 +48,7 @@ runs:
 
  terraform -chdir="infra/project-config" init > /dev/null
  terraform -chdir="infra/project-config" apply -auto-approve > /dev/null
- account_name=$(terraform -chdir="infra/project-config" output -json network_configs | jq -r ".${network_name}.account_name")
+ account_name=$(terraform -chdir="infra/project-config" output -json network_configs | jq -r ".[\"${network_name}\"].account_name")
 
  echo "Account name retrieved: ${account_name}"
  echo "account_name=${account_name}" >> "$GITHUB_OUTPUT"