fix(deps): update module cloud.google.com/go/storage to v1.51.0

Author: renovate[bot]

go.mod

@@ -3,7 +3,7 @@ module github.com/batmac/ccat
 go 1.24
 
 require (
-	cloud.google.com/go/storage v1.48.0
+	cloud.google.com/go/storage v1.51.0
 	git.sr.ht/~adnano/go-gemini v0.2.6
 	github.com/JohannesKaufmann/html-to-markdown v1.6.0
 	github.com/OneOfOne/xxhash v1.2.8