chore: update 'flake.nix' (#1428)

Update OCM CLI vendor hash (see:
.github/workflows/flake_vendorhash.yaml)

Co-authored-by: ocmbot[bot] <125909804+ocmbot[bot]@users.noreply.github.com>

Author: ocmbot[bot]

flake.nix

@@ -36,7 +36,7 @@
             state = if (self ? rev) then "clean" else "dirty";
 
             # This vendorHash represents a derivative of all go.mod dependencies and needs to be adjusted with every change
-            vendorHash = "sha256-NinbXyHAnXYtETqsfekz2rb8R7O5wXfHG0HIt+GjrW8=";
+            vendorHash = "sha256-W9Od79/LKuZEJdZS//R9Wbjq3xkB8sgMbp+rtTtmmmA=";
 
             src = ./.;