Bump go from 1.26.2 to v1.26.4

Author: dghubble-renovate[bot]

go.mod

@@ -2,7 +2,7 @@ module github.com/poseidon/github-runner
 
 go 1.25.0
 
-toolchain go1.26.2
+toolchain go1.26.4
 
 require (
 	github.com/bradleyfalzon/ghinstallation/v2 v2.18.0