[automated] Update CHANGELOG.md

Author: nf-core-bot

CHANGELOG.md

@@ -15,6 +15,7 @@
 - Template: Update nextflow.config to use environment variable for `hook_url` ([#3756](https://github.com/nf-core/tools/pull/3756))
 - Update nf-test to 0.9.3 ([#3781](https://github.com/nf-core/tools/pull/3781))
 - update release checklist to battle test pipeline template more ([#3788](https://github.com/nf-core/tools/pull/3788))
+- feat: Add codespaces badge to template README ([#3824](https://github.com/nf-core/tools/pull/3824))
 
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