Bump go from 1.25.7 to v1.26.0 (#403)

Co-authored-by: dghubble-renovate[bot] <119624128+dghubble-renovate[bot]@users.noreply.github.com>

Author: dghubble-renovate[bot]

go.mod

@@ -2,7 +2,7 @@ module github.com/poseidon/fleetlock
 
 go 1.25.0
 
-toolchain go1.25.7
+toolchain go1.26.0
 
 require (
 	github.com/prometheus/client_golang v1.23.2