test: update pinned busybox image to 1.36

https://bugs.busybox.net/show_bug.cgi?id=15236 fixes SIGILL
on accessing sha256 on some CPUs

Signed-off-by: CrazyMax <[email protected]>

Author: crazy-max

util/testutil/integration/pins.go

@@ -1,11 +1,11 @@
 package integration
 
 var pins = map[string]map[string]string{
-	// busybox is pinned to 1.35. Newer produces has "illegal instruction" panic on some of Github infra on sha256sum
+	// busybox 1.36
 	"busybox:latest": {
-		"amd64":   "sha256:0d5a701f0ca53f38723108687add000e1922f812d4187dea7feaee85d2f5a6c5",
-		"arm64v8": "sha256:ffe38d75e44d8ffac4cd6d09777ffc31e94ea0ded6a0164e825a325dc17a3b68",
-		"library": "sha256:f4ed5f2163110c26d42741fdc92bd1710e118aed4edb19212548e8ca4e5fca22",
+		"amd64":   "sha256:023917ec6a886d0e8e15f28fb543515a5fcd8d938edb091e8147db4efed388ee",
+		"arm64v8": "sha256:1fa89c01cd0473cedbd1a470abb8c139eeb80920edf1bc55de87851bfb63ea11",
+		"library": "sha256:3fbc632167424a6d997e74f52b878d7cc478225cffac6bc977eedfe51c7f4e79",
 	},
 	// alpine 3.18
 	"alpine:latest": {