Didn't realize you could compare tags and not just releases although that should have been obvious

.github/workflows/canary.yml

@@ -178,7 +178,7 @@ jobs:
           artifacts: "release_output/*.tar.gz,release_output/*.zip"
           #artifacts: "release_output/*.tar.gz,release_output/*.zip/*AppImage*"
           tag: ${{ steps.version_info.outputs.build_version }}
-          body: "**Full Changelog**: https://github.com/${{ github.repository }}/compare/${{ steps.version_info.outputs.prev_build_version }}...${{ steps.version_info.outputs.build_version }}"
+          body: "**Full Changelog**: https://github.com/${{ github.repository }}/compare/Canary-${{ steps.version_info.outputs.prev_build_version }}...Canary-${{ steps.version_info.outputs.build_version }}"
           omitBodyDuringUpdate: true
           allowUpdates: true
           replacesArtifacts: true
@@ -244,6 +244,7 @@ jobs:
           name: "Canary ${{ steps.version_info.outputs.build_version }}"
           artifacts: "publish_ava/*.tar.gz, publish_headless/*.tar.gz"
           tag: ${{ steps.version_info.outputs.build_version }}
+          body: "**Full Changelog**: https://github.com/${{ github.repository }}/compare/Canary-${{ steps.version_info.outputs.prev_build_version }}...Canary-${{ steps.version_info.outputs.build_version }}"
           omitBodyDuringUpdate: true
           allowUpdates: true
           replacesArtifacts: true