Json2Cool: bugfix for dealing with string values

OBO Evgeny Alexandrov (@aleksand)

This merge request affects 1 package:

• Database/IOVDbSvc

This merge request affects 1 file:

• Database/IOVDbSvc/src/Json2Cool.cxx

Adding @ssnyder as watcher

added Database main review-pending-level-1 labels

added bugfix label

CI Result SUCCESS (hash 22691ea8)

	Athena	AthSimulation	AthGeneration	AthAnalysis
externals
cmake
make
tests

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Athena: number of compilation errors 0, warnings 0
AthSimulation: number of compilation errors 0, warnings 0
AthGeneration: number of compilation errors 0, warnings 0
AthAnalysis: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-EL9 2896]

removed review-pending-level-1 label

added review-approved label

mentioned in commit a18c46ae

merged