New actions (#29)

* Use new actions

* Use new actions

* Use new actions

* Update settings.gradle.kts

* Simplify

* Update gradle via qupath/actions/.github/workflows/update-gradle.yml

* Reword

Author: alanocallaghan

.github/workflows/scijava-maven.yml

@@ -5,7 +5,7 @@ on:
     inputs:
       release:
         type: boolean
-        description: Whether to make a release, or if not a snapshot
+        description: Should this be a release? (if not, do a snapshot)
         required: true
 
 jobs: