chore: add mount path to verbose logging for approle

[werne2j]

Description

Add mount path to verbose logging for approle

Checklist

Please make sure that your PR fulfills the following requirements:

• Reviewed the guidelines for contributing to this repository
• The commit message follows the Conventional Commits Guidelines.
• Tests for the changes have been updated
• Are you adding dependencies? If so, please run go mod tidy -compat=1.17 to ensure only the minimum is pulled in.
• Docs have been added / updated
• Optional. My organization is added to USERS.md.

Type of Change

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• New tests
• Build/CI related changes
• Documentation content changes
• Other (please describe) - improve logging

Other information

[codecov-commenter]

Codecov Report

Merging #489 (c3789c8) into main (ddbd42b) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main     #489   +/-   ##
=======================================
  Coverage   75.31%   75.31%           
=======================================
  Files          25       25           
  Lines        1689     1689           
=======================================
  Hits         1272     1272           
  Misses        323      323           
  Partials       94       94           

Impacted Files	Coverage Δ
pkg/auth/vault/approle.go	68.96% <100.00%> (ø)

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