Use a tag instead of commit hash

* F-Droid requested using a tag instead of a specific commit

metadata/com.redcoracle.episodes.yml

@@ -0,0 +1,24 @@
+Categories:
+  - Multimedia
+License: GPL-3.0-or-later
+AuthorName: red-coracle
+SourceCode: https://github.com/red-coracle/episodes
+IssueTracker: https://github.com/red-coracle/episodes/issues
+
+AutoName: Episodes
+
+RepoType: git
+Repo: https://github.com/red-coracle/episodes
+
+Builds:
+  - versionName: 0.13.2
+    versionCode: 15
+    commit: 0.13.2
+    subdir: app
+    gradle:
+      - standard
+
+AutoUpdateMode: None
+UpdateCheckMode: None
+CurrentVersion: 0.13.2
+CurrentVersionCode: 15