Fix for iamseth/oracledb_exporter#459

[valrusu]

Description

Fixes # 459

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

Ran this version for 3 weeks for 36 databases

Screenshots (if appropriate):

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules
• Updated version in Makefile respecting semver v2

[duj4]

@Yannig The latest one is still at 0.6.0 on Apr 6th, this commit was merged (Jul 29th) but not released, any update further?