Fix setting of OTLP_TRACES_PROTOCOL to config.otlp.traces.protocol

[carlreid]

What type of PR is this?

/kind bug
/area falcosidekick-chart

What this PR does / why we need it:

Aligns the config value config.otlp.traces.protocol with the environment variable used by Falco Sidekick.

Which issue(s) this PR fixes:

Fixes #741

Checklist

• Chart Version bumped
• Variables are documented in the README.md
• CHANGELOG.md updated

[poiana]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: carlreid
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[poiana]

Welcome @carlreid! It looks like this is your first PR to falcosecurity/charts 🎉

[Issif]

Thanks for this PR, to avoid multi bumps of the version, I included your change in #740

[carlreid]

Thanks for this PR, to avoid multi bumps of the version, I included your change in #740

Sure thing 👍