package.json: Unpin eslint-plugin-react
package.json: Unpin eslint-plugin-react

Regression from 7.15.0 was fixed.

Closes #12927
cockpituous/cockpit,garrett/cockpit,cockpit-project/cockpit,cockpituous/cockpit,garrett/cockpit,cockpituous/cockpit,cockpit-project/cockpit,deryni/cockpit,mvollmer/cockpit,cockpituous/cockpit,moraleslazaro/cockpit,martinpitt/cockpit,martinpitt/cockpit,garrett/cockpit,moraleslazaro/cockpit,moraleslazaro/cockpit,moraleslazaro/cockpit,cockpit-project/cockpit,mvollmer/cockpit,deryni/cockpit,moraleslazaro/cockpit,deryni/cockpit,cockpituous/cockpit,moraleslazaro/cockpit,cockpituous/cockpit,mvollmer/cockpit,martinpitt/cockpit,deryni/cockpit,deryni/cockpit,garrett/cockpit,moraleslazaro/cockpit,martinpitt/cockpit,martinpitt/cockpit,garrett/cockpit,deryni/cockpit,mvollmer/cockpit,mvollmer/cockpit,cockpit-project/cockpit,cockpit-project/cockpit,deryni/cockpit