Allowlist build files in external/python/absl-py

Needed because we import absl-py in our bazel.workspace file.
It only worked before in b, not mixed builds, because b was
run from the real android tree instead of out/soong/workspace.

Bug: 234449134
Bug: 249685973
Test: Presubmits
Change-Id: I51c28e23260bed7ca7d4968fd823f52f0d26a0ab
diff --git a/android/allowlists/allowlists.go b/android/allowlists/allowlists.go
index 24731e8..0718da3 100644
--- a/android/allowlists/allowlists.go
+++ b/android/allowlists/allowlists.go
@@ -364,6 +364,7 @@
 		"external/guava":/* recursive = */ true,
 		"external/jsr305":/* recursive = */ true,
 		"external/protobuf":/* recursive = */ false,
+		"external/python/absl-py":/* recursive = */ true,
 
 		// this BUILD file is globbed by //external/icu/icu4c/source:icu4c_test_data's "data/**/*".
 		"external/icu/icu4c/source/data/unidata/norm2":/* recursive = */ false,