Update module github.com/caarlos0/env/v9 to v11

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

go.mod

@@ -5,7 +5,7 @@ go 1.24.0
 require (
 	github.com/bradleyfalzon/ghinstallation/v2 v2.17.0
 	github.com/caarlos0/env/v11 v11.3.1
-	github.com/caarlos0/env/v9 v9.0.0
+	github.com/caarlos0/env/v11 v11.3.1
 	github.com/go-git/go-git/v5 v5.16.4
 	github.com/google/go-github/v55 v55.0.0
 	github.com/google/go-github/v68 v68.0.0