tests/watchexec: direct image instead of occam packager

See paketo-buildpacks/libpak#321, create-package is not able to support
multiarch buildpacks and watchexec was just released multiarch

integration.json

@@ -4,5 +4,5 @@
     "index.docker.io/paketobuildpacks/builder-jammy-buildpackless-base:latest"
   ],
   "build-plan": "github.com/paketo-community/build-plan",
-  "watchexec": "github.com/paketo-buildpacks/watchexec"
+  "watchexec": "index.docker.io/paketobuildpacks/watchexec"
 }

integration/init_test.go

@@ -76,9 +76,7 @@ func TestIntegration(t *testing.T) {
 		Execute(root)
 	Expect(err).NotTo(HaveOccurred())
 
-	settings.Buildpacks.Watchexec.Online, err = libpakBuildpackStore.Get.
-		Execute(settings.Config.Watchexec)
-	Expect(err).ToNot(HaveOccurred())
+	settings.Buildpacks.Watchexec.Online = settings.Config.Watchexec
 
 	settings.Buildpacks.BuildPlan.Online, err = libpakBuildpackStore.Get.
 		Execute(settings.Config.BuildPlan)

integration/simple_app_test.go

@@ -184,7 +184,7 @@ func testSimpleApp(t *testing.T, context spec.G, it spec.S) {
 					settings.Buildpacks.Watchexec.Online,
 					settings.Buildpacks.NGINX.Online,
 				).
-				WithPullPolicy("never").
+				WithPullPolicy("if-not-present").
 				WithEnv(map[string]string{
 					"BP_LIVE_RELOAD_ENABLED": "true",
 				}).
@@ -242,7 +242,7 @@ func testSimpleApp(t *testing.T, context spec.G, it spec.S) {
 				Execute(name, source)
 			Expect(err).To(HaveOccurred())
 
-			Expect(logs).To(ContainSubstring("invalid syntax"))
+			Expect(logs.String()).To(ContainSubstring("invalid syntax"))
 		})
 	})
 }