Add jarjar's deps to bp2build allowlist

jarjar switched its deps from prebuilts to source (aosp/2305413). Add
the source directory to the allowlist. This should fix broken bp2build
presubmits

Test: b build //external/jarjar
Change-Id: Ic7f37ea0ac167dc3b0f605ca0e67f8740652e0b1
diff --git a/android/allowlists/allowlists.go b/android/allowlists/allowlists.go
index bf39404..2e4068d 100644
--- a/android/allowlists/allowlists.go
+++ b/android/allowlists/allowlists.go
@@ -166,6 +166,7 @@
 		"external/minijail":                      Bp2BuildDefaultTrueRecursively,
 		"external/objenesis":                     Bp2BuildDefaultTrueRecursively,
 		"external/openscreen":                    Bp2BuildDefaultTrueRecursively,
+		"external/ow2-asm":                       Bp2BuildDefaultTrueRecursively,
 		"external/pcre":                          Bp2BuildDefaultTrueRecursively,
 		"external/protobuf":                      Bp2BuildDefaultTrueRecursively,
 		"external/python/six":                    Bp2BuildDefaultTrueRecursively,