feat: [CI-18982]: update buildkit plugin to add gcs store switch behind ff

Author: smjt-h

go.mod

@@ -5,7 +5,7 @@ go 1.23.0
 toolchain go1.24.2
 
 require (
-	github.com/drone-plugins/drone-buildx v1.3.7
+	github.com/drone-plugins/drone-buildx v1.3.8
 	github.com/joho/godotenv v1.5.1
 	github.com/sirupsen/logrus v1.9.0
 	golang.org/x/oauth2 v0.13.0

go.sum

@@ -18,6 +18,8 @@ github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/drone-plugins/drone-buildx v1.3.7 h1:qq363dMXm5KP6baXCIeC5JMZjP+iQxIZmPqLwgGEB28=
 github.com/drone-plugins/drone-buildx v1.3.7/go.mod h1:qn5sY9Wm5OMuPuIYy0mM1Lu5j3SP1VqlBmiO+lcHB2I=
+github.com/drone-plugins/drone-buildx v1.3.8 h1:JbB+GuK7d3EzVbq4zU/HgUEFioc9tCiu2CKvEiYkMIA=
+github.com/drone-plugins/drone-buildx v1.3.8/go.mod h1:qn5sY9Wm5OMuPuIYy0mM1Lu5j3SP1VqlBmiO+lcHB2I=
 github.com/drone-plugins/drone-plugin-lib v0.4.2 h1:EiJ3Kco6ypP5noBQqVt1bBbuO1eUAumtPvLTX/NVAYg=
 github.com/drone-plugins/drone-plugin-lib v0.4.2/go.mod h1:KwCu92jFjHV3xv2hu5Qg/8zBNvGwbhoJDQw/EwnTvoM=
 github.com/drone/drone-go v1.7.1 h1:ZX+3Rs8YHUSUQ5mkuMLmm1zr1ttiiE2YGNxF3AnyDKw=