feat!: update accelleran/dash-front-back-end docker tag to v7

[acc-renovate[bot]]

This PR contains the following updates:

Package	Update	Change
accelleran/dash-front-back-end	major	6.2.4 -> 7.0.0

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BEGIN_COMMIT_OVERRIDE feat!: update accelleran/dash-front-back-end docker tag to v7 #811 END_COMMIT_OVERRIDE