chore: prepare for next release

CHANGELOG.md

@@ -1,5 +1,7 @@
 # PrivateBin version history
 
+## 1.7.5 (not yet released)
+
 ## 1.7.4 (2024-07-09)
 * CHANGED: Saving markdown pastes uses `.md` extension instead of `.txt` (#1293)
 * CHANGED: Enable strict type checking in PHP (#1350)

Makefile

@@ -1,7 +1,7 @@
 .PHONY: all coverage coverage-js coverage-php doc doc-js doc-php increment sign test test-js test-php help
 
 CURRENT_VERSION = 1.7.4
-VERSION ?= 1.7.4
+VERSION ?= 1.7.5
 VERSION_FILES = README.md SECURITY.md doc/Installation.md js/package*.json lib/Controller.php Makefile
 REGEX_CURRENT_VERSION := $(shell echo $(CURRENT_VERSION) | sed "s/\./\\\./g")
 REGEX_VERSION := $(shell echo $(VERSION) | sed "s/\./\\\./g")