fix(cypress): Adjust cypress tests that relied on version to be 28

Signed-off-by: Ferdinand Thiessen <opensource@fthiessen.de>

cypress/e2e/theming/navigation-bar-settings.cy.ts

@@ -89,6 +89,7 @@ describe('Admin theming set default apps', () => {
 	})
 
 	it('See the default app is changed back to default', () => {
+		cy.reload()
 		cy.get('#nextcloud').click()
 		cy.url().should('match', /apps\/dashboard/)
 	})

cypress/support/commonUtils.ts

@@ -45,7 +45,7 @@ export function installTestApp() {
 		const version = output.stdout.match(/(\d\d+)\.\d+\.\d+/)?.[1]
 		cy.wrap(version).should('not.be.undefined')
 		cy.exec(`docker cp '${testAppPath}' nextcloud-cypress-tests-server:/var/www/html/apps`, { log: true })
-		cy.exec(`docker exec nextcloud-cypress-tests-server sed -i 's|version="[0-9]+|version="${version}|' apps/testapp/appinfo/info.xml`)
+		cy.exec(`docker exec nextcloud-cypress-tests-server sed -i -e 's|-version="[0-9]\\+|-version="${version}|g' apps/testapp/appinfo/info.xml`)
 		cy.runOccCommand('app:enable testapp')
 	})
 }