Bump to adaptivecards@1.2.6 and disable tabindex

[compulim]

Fixes #1340.

Changelog Entry

Fixed

• Fixes #1340. Card container should not be focusable if they do not have tapAction, by @compulim in PR #3193

Changed

• Bumped Adaptive Cards dependencies, by @compulim in PR #3193
  • adaptivecards@1.2.6

Description

Card container should not be focusable (no tabIndex="0") if they do not have tapAction. This requires bumping to Adaptive Cards 1.2.6 plus a global settings.

Specific Changes

• Bump to adaptivecards@1.2.6
• Set AdaptiveCards.GlobalSettings.setTabIndexAtCardRoot to true if the card has tapAction prop, otherwise false
• Update tests and screenshots that related to "root container is TAB-able"

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• Testing Added