chore(ci): add deployment timestamp envar properly

[DerekRoberts]

Try number 2. :P

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Thanks for the PR!

Deployments, as required, will be available below:

• Frontend
• Vehicles
• Dops
• Policy
• Scheduler

Please create PRs in draft mode. Mark as ready to enable:

• Analysis Workflow

After merge, new images are promoted to:

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[sonarqubecloud]

Quality Gate passed for 'onroutebc_policy'

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0 Accepted issues

Measures
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0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[sonarqubecloud]

Quality Gate passed for 'onroutebc dops'

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0 Accepted issues

Measures
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0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[sonarqubecloud]

Quality Gate passed for 'onroutebc vehicles'

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[sonarqubecloud]

Quality Gate passed for 'onroutebc_scheduler'

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[sonarqubecloud]

Quality Gate passed for 'onroutebc frontend'

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0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud