fix: Update dependency go to v1.25.4

renovate[bot] · web-flow · commit 48acfd303be8 · 2025-11-05T20:38:11.000Z
diff --git a/go.mod b/go.mod
@@ -2,7 +2,7 @@ module ghcr-exporter
 
 go 1.25
 
-toolchain go1.25.3
+toolchain go1.25.4
 
 require (
 	github.com/d0ugal/promexporter v1.11.0
