Upgrade [Schema.org Metatag] module from ~1.0 to ~2.0 for the [Varbase API] module needed default configs

Problem/Motivation

Schema.org Metatag 8.x-2.0 was released 12 Sep 2020 at 18:42 EEST
https://www.drupal.org/project/schema_metatag/releases/8.x-2.0

#3170826: Upgrade [Schema.org Metatag] module from ~1.0 to ~2.0

Proposed resolution

Change the composer.json file to get ~2.0 version.

Remaining tasks

N/A

User interface changes

N/A

API changes

N/A

Data model changes

N/A