Apply suggestions from code review

Co-authored-by: Dennis Kobert <dennis@kobert.dev>

Author: timon-schelling

.github/workflows/scripts/artifact-upload.bash

@@ -15,7 +15,7 @@ Arguments:
   github-token    : GitHub token (PAT or equivalent) with write access to the target repo
 
 This will perform a GitHub API PUT to /repos/{owner}/{repo}/contents/{target-path}.
-If a file already exists at that path, it will auto-detect the SHA and update; otherwise it will create.
+If a file already exists at that path, it will auto-detect the SHA and update; otherwise it will create a new one.
 EOF
   exit 1
 }