fix: run sonar on release tags not on push to main

[JossWhittle]

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🛠️ 🐳 Build PR Container - azurekeycloaktester-container - 🏷️ Commit: dd5fa92 - ⚙️ Workflow: 11837984277

harbor.ukserp.ac.uk/github-workflows-test/azurekeycloaktester:pr-190
harbor.ukserp.ac.uk/github-workflows-test/azurekeycloaktester:pr-190-dd5fa92
sha256:8932886bdada08f5b88ade21a56fdfaba8b256568d82a3f8253dbd2d1bb0153e

[github-actions]

🚀 🐳 Build Release Container - azurekeycloaktester-container - 🏷️ Commit: cdc1ac2 - ⚙️ Workflow: 11838018256

v1.0.1-azurekeycloaktester-container
harbor.ukserp.ac.uk/github-workflows-test/azurekeycloaktester:1.0.1

sha256:2407b7fb8638be7228b34ea621c5a541d9f9f617fcdd3a11c0929d7c486a094a