Test pkcs7 against master and stable now that the wolfSSL fix has merged

Author: aidangarske

.github/examples-manifest.yml

@@ -191,13 +191,6 @@ examples:
   - id: pkcs7
     path: pkcs7
     profile: pkcs7
-    # TODO: drop wolfssl_ref once wolfSSL/wolfssl#10904 merges, then re-run so
-    # pkcs7 goes back to the normal master + stable refs.
-    # signedData-stream cannot pass on master: wc_PKCS7_EncodeContentStreamHelper()
-    # leaves ret at its BAD_FUNC_ARG initializer when the caller passes a
-    # precomputed hash, so the content is never written and the bundle verifies
-    # nowhere. Test against the fix rather than masking the example as expected-fail.
-    wolfssl_ref: refs/pull/10904/head
     deps: [zlib1g-dev]
     run:
       # runall.sh drives the binaries in dependency order (envelopedData-ktri