Update GitHub Actions workflows. (#577)

This PR was automatically generated by the
update-workflows-ecosystem-providers workflow in the pulumi/ci-mgmt
repo, from commit 9b60d6c643780f4a645273cb6a5b3dcce6687d94.

.github/workflows/export-repo-secrets.yml

@@ -16,7 +16,7 @@ jobs:
         uses: pulumi/esc-export-secrets-action@v1
         with:
           organization: pulumi
-          org-environment: github-secrets/${{ github.repository_owner }}-${{ github.event.repository.name }}
+          org-environment: imports/github-secrets
           exclude-secrets: EXPORT_SECRETS_PRIVATE_KEY
           github-token: ${{ steps.generate-token.outputs.token }}
           oidc-auth: true