fix(deps): update dependency iso-639-1 to v2.1.15

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
iso-639-1	2.1.13 -> 2.1.15

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Release Notes

meikidd/iso-639-1

v2.1.15

Compare Source

• Change parameters type "LanguageCode" to "string"

v2.1.14

Compare Source

• Bump async from 2.6.0 to 2.6.4 #​53
• Add a type to list the langage codes in the TS definition file #​55

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