fix(ci): provide integrity key for spec conformance

Pass the spec integrity public key to the conformance job so
spec-integrity verification succeeds on SDK PR checks.

Author: Nathan Gillett

.github/workflows/ci.yml

@@ -114,6 +114,8 @@ jobs:
           INTENTPROOF_SDK_ID: python
           INTENTPROOF_REPLAY_VERIFY: "1"
           INTENTPROOF_CONFORMANCE_JSON: "1"
+          INTENTPROOF_CERTIFICATE_SCHEMA_VERSION: "v2"
+          INTENTPROOF_SPEC_INTEGRITY_PUBLIC_KEY_PEM: ${{ secrets.INTENTPROOF_SPEC_INTEGRITY_PUBLIC_KEY_PEM }}
         run: bash scripts/spec-conformance.sh
 
       - name: Upload conformance report artifact