fix(deps): update dependency @grafana/e2e-selectors to ^12.1.0-242212

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@grafana/e2e-selectors (source)	^12.1.0-241536 -> ^12.1.0-242212

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Warning

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[github-actions]

Playwright test results

Image Name	Version	Result	Report
grafana-dev	12.1.0-242212	✅
grafana-enterprise	12.0.0	✅
grafana-enterprise	11.3.6	✅
grafana-enterprise	10.2.9	✅
grafana-enterprise	9.2.20	✅
grafana-enterprise	8.5.27	✅

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