Update prometheus libraries

BLOCKED BY ⚠

!1617 (merged), !1619 (merged)

What does this MR do?

1. Updates github.com/prometheus/procfs to version v0.0.5.
2. Updates github.com/prometheus/client_golang to version v1.1.0.

Why was this MR needed?

Requirement for !1615 (merged).

Are there points in the code the reviewer needs to double check?

Does this MR meet the acceptance criteria?

• Documentation created/updated
• Added tests for this feature/bug
• In case of conflicts with master - branch was rebased

What are the relevant issue numbers?

Related to #4119 (closed), #3518 (closed)

Closes #4344 (closed)