Upgrade pest_generator to 2.5.5 am: 2e36314e24 am: 69662c3e5d am: c2a5a62530 am: 0f91b48f78

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/pest_generator/+/2441180

Change-Id: Ie19314cb533a7ab1e8cb20a5c0078bcfa3599909
Signed-off-by: Automerger Merge Worker <[email protected]>