bump go to use go1.23.4

Per Goncalves da Silva · Per Goncalves da Silva · commit ad107114f1ee · 2025-02-17T16:05:48.000+01:00
Signed-off-by: Per Goncalves da Silva &lt;pegoncal@redhat.com&gt;
diff --git a/go.mod b/go.mod
@@ -1,8 +1,6 @@
 module github.com/operator-framework/operator-registry
 
-go 1.23.0
-
-toolchain go1.23.4
+go 1.23.4
 
 require (
 	github.com/akrylysov/pogreb v0.10.2
