macOS build failures in CircleCI

[sleepdefic1t]

Describe the bug

CircleCI builds fail for macOS.
This was discovered during #54

I can confirm that Cpp-Client builds and passes tests on my macOS system.

Further exacerbating this is that PR's do not appear to trigger macOS CI instances consistently.
PR's from @ciband do not trigger macOS CI builds.
I personally can trigger macOS builds by submitting PR's,
but I do not have the write access to rerun workflows in CircleCI.

To Reproduce

Submit a PR to the Cpp-Client Repo.

Expected behavior

CI should pass successfully on all platforms for all PR submissions.

[sleepdefic1t]

Related Issue also discussed in ArkEcosystemArchive/cpp-crypto#27

[sleepdefic1t]

#56 did not trigger CI builds for macOS, otherwise passes test.
#57, #58, and #59 (submitted myself) builds and passes all tests including macOS.

Additionally, the following two PR's (also submitted by me) in Cpp-Crypto trigger macOS builds which pass all tests including macOS:

• chore: update library info cpp-crypto#46
• chore: add arduino sketches cpp-crypto#47

Overall, macOS builds seem to fail sporadically.
That could just be something funky on CircleCI's end.

PR's from other users continue to not trigger macOS builds.
PR's from myself continue to trigger macOS builds.

[sleepdefic1t]

Updates to #56 from @ciband have since triggered macOS builds, but subsequently fail.

[sleepdefic1t]

These issues are most likely unrelated to Cpp-Client.

Closing this out.