chore: prepare for next release

CHANGELOG.md

@@ -1,5 +1,7 @@
 # PrivateBin version history
 
+## 1.7.6 (not yet released)
+
 ## 1.7.5 (2024-11-16)
 * ADDED: Allow non persistent SQL connections, if configured (#1394)
 * ADDED: Show a button (that redirects to the `basepath` URL) inside the alert after a paste is deleted