chore(issue-templates): rename the pre-release template to early-pre-release

Author: NickLarsenNZ

.github/ISSUE_TEMPLATE/pre-release.md renamed to .github/ISSUE_TEMPLATE/early-pre-release.md

@@ -1,5 +1,5 @@
 ---
-name: Pre-Release Container Image Updates
+name: Early Pre-Release Container Image Updates
 about: This template can be used to track the container image updates leading up to the next Stackable release
 title: "chore: Update Container Images for Stackable Release XX.(X)X"
 labels: ['epic']