v0.7.53

PkgTemplates v0.7.53

Diff since v0.7.52

Merged pull requests:

• support JULIA_REFERENCETESTS_UPDATE env var in tests (#486) (@simeonschaub)
• GH Actions: remove event_name from job name (#487) (@simeonschaub)
• add Runic plugin (#488) (@simeonschaub)
• release 0.7.53 (#489) (@simeonschaub)
• Delete Slack Notifier (#490) (@oxinabox)