update(repositories.yaml): add falco-talon

[leogr]

What type of PR is this?

Uncomment one (or more) /kind <> lines:

/kind bug

/kind cleanup

/kind documentation

/kind feature

/kind stable

/kind incubating

/kind sandbox

/kind deprecated

Any specific area of the project related to this PR?

Uncomment one (or more) /area <> lines:

/area governance

/area proposals

/area utils

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #403

Special notes for your reviewer:

We have first to transfer the repo, then merge the followings:

• https://github.com/falcosecurity/test-infra/pull/1639
• https://github.com/falcosecurity/test-infra/pull/1640

This is the last PR that will need to be merged.

/hold

[leogr]

/hold cancel

[poiana]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: jasondellaluce, leogr

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• ~~OWNERS~~ [jasondellaluce,leogr]

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