fix: hardcode role ARNs to fix workflow_call secrets issue

Secrets context is not available in `with:` inputs for reusable
workflows. Hardcode role ARNs since they're not sensitive (just
identifiers - actual auth happens via OIDC).

- ConfigTests: arn:aws:iam::677276116620:role/cloud-nuke-gha
- Sandbox: arn:aws:iam::738755648600:role/cloud-nuke-gha

Author: james00012

.github/workflows/nuke.yml

@@ -49,7 +49,7 @@ jobs:
     uses: ./.github/workflows/nuke-account.yml
     with:
       account_name: ConfigTests
-      role_arn: ${{ secrets.CONFIGTESTS_ROLE_ARN }}
+      role_arn: arn:aws:iam::677276116620:role/cloud-nuke-gha
       older_than: 2h
       extra_excludes: --exclude-resource-type internet-gateway
     secrets: inherit
@@ -64,7 +64,7 @@ jobs:
     uses: ./.github/workflows/nuke-account.yml
     with:
       account_name: Sandbox
-      role_arn: ${{ secrets.SANDBOX_ROLE_ARN }}
+      role_arn: arn:aws:iam::738755648600:role/cloud-nuke-gha
       older_than: 24h
       extra_excludes: --exclude-resource-type eip
     secrets: inherit