rebase: Bump github.com/onsi/ginkgo/v2 from 2.11.0 to 2.12.0

Bumps [github.com/onsi/ginkgo/v2](https://github.com/onsi/ginkgo) from 2.11.0 to 2.12.0.
- [Release notes](https://github.com/onsi/ginkgo/releases)
- [Changelog](https://github.com/onsi/ginkgo/blob/master/CHANGELOG.md)
- [Commits](https://github.com/onsi/ginkgo/compare/v2.11.0...v2.12.0)

---
updated-dependencies:
- dependency-name: github.com/onsi/ginkgo/v2
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

vendor/github.com/onsi/ginkgo/v2/README.md

@@ -15,7 +15,7 @@ import (
     ...
 )
 
-Describe("Checking books out of the library", Label("library"), func() {
+var _ = Describe("Checking books out of the library", Label("library"), func() {
     var library *libraries.Library
     var book *books.Book
     var valjean *users.User
@@ -50,7 +50,7 @@ Describe("Checking books out of the library", Label("library"), func() {
 
             It("tells the user", func(ctx SpecContext) {
                 err := valjean.Checkout(ctx, library, "Les Miserables")
-                Expect(error).To(MatchError("Les Miserables is currently checked out"))
+                Expect(err).To(MatchError("Les Miserables is currently checked out"))
             }, SpecTimeout(time.Second * 5))
 
             It("lets the user place a hold and get notified later", func(ctx SpecContext) {
@@ -74,7 +74,7 @@ Describe("Checking books out of the library", Label("library"), func() {
     When("the library does not have the book in question", func() {
         It("tells the reader the book is unavailable", func(ctx SpecContext) {
             err := valjean.Checkout(ctx, library, "Les Miserables")
-            Expect(error).To(MatchError("Les Miserables is not in the library catalog"))
+            Expect(err).To(MatchError("Les Miserables is not in the library catalog"))
         }, SpecTimeout(time.Second * 5))
     })
 })