fix: add CAPISCIO_SKIP_CHECKSUM to E2E test env

No releases currently include checksums.txt, so E2E tests need
to skip checksum verification.

Author: beonde

.github/workflows/e2e.yml

@@ -38,3 +38,6 @@ jobs:
 
       - name: Run E2E tests
         run: pnpm test:e2e
+        env:
+          # No releases currently include checksums.txt
+          CAPISCIO_SKIP_CHECKSUM: 'true'