Fix its singular value

[Kudbettin]

Fixed faulty over restriction in Then its singular value condition match the "search_regex" regex.

(i.e. haven't accounted for the stash could being occupied by multiple resources)

[coveralls]

Pull Request Test Coverage Report for Build 1056

• 0 of 13 (0.0%) changed or added relevant lines in 1 file are covered.
• 6 unchanged lines in 1 file lost coverage.
• Overall coverage increased (+0.03%) to 60.101%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
terraform_compliance/steps/then/its_value_condition_match_the_search_regex.py	0	13	0.0%

Files with Coverage Reduction	New Missed Lines	%
terraform_compliance/common/defaults.py	6	83.33%

Totals
Change from base Build 1055:	0.03%
Covered Lines:	1193
Relevant Lines:	1985

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💛 - Coveralls