chore(deps): update go toolchain directive to v1.26.7 (#339)

/lgtm

Author: renovate[bot]

go.mod

@@ -2,7 +2,7 @@ module github.com/IBM/power-dra-driver
 
 go 1.26.0
 
-toolchain go1.26.6
+toolchain go1.26.7
 
 require (
 	github.com/spf13/pflag v1.0.10