Add AWS_REGION environment variable to deploy workflow (#218)

Latest changes also failed deploy, adding region to see if that fixes
it. Proposed by Copilot on the failed action page.

-
https://github.com/clearhaus/gateway-api-docs/actions/runs/18274820163/job/52024402482

Author: cbobach

.github/workflows/deploy.yml

@@ -11,11 +11,12 @@ jobs:
     env:
       AWS_ACCESS_KEY_ID: ${{ secrets.NONPCI_AWS_ACCESS_KEY_ID }}
       AWS_SECRET_ACCESS_KEY: ${{ secrets.NONPCI_AWS_SECRET_ACCESS_KEY }}
+      AWS_REGION: "eu-west-1"
     steps:
       - uses: actions/checkout@v4
 
       - name: build `prod`
         run: ./build/build.sh
 
       - name: Deploy `prod`
-        run: docker run -e AWS_ACCESS_KEY_ID -e AWS_SECRET_ACCESS_KEY clearhaus/gateway-api-docs yarnpkg deploy:production
+        run: docker run -e AWS_ACCESS_KEY_ID -e AWS_SECRET_ACCESS_KEY -e AWS_REGION clearhaus/gateway-api-docs yarnpkg deploy:production