Upgrade rust/crates/protobuf to 2.22.0

Test: make
Change-Id: I0967df149e3d7ca88f0abe6281adf2425adc6f1e
diff --git a/regenerate.sh b/regenerate.sh
index a1e0dd9..672106e 100755
--- a/regenerate.sh
+++ b/regenerate.sh
@@ -36,8 +36,9 @@
     --rust_out tmp-generated \
     --rust_opt 'serde_derive=true inside_protobuf=true' \
     -I../proto \
-    ../proto/google/protobuf/*.proto \
-    ../proto/google/protobuf/compiler/* \
+    -I../protoc-bin-vendored/include \
+    ../protoc-bin-vendored/include/google/protobuf/*.proto \
+    ../protoc-bin-vendored/include/google/protobuf/compiler/* \
     ../proto/rustproto.proto
 
 mv tmp-generated/descriptor.rs tmp-generated/plugin.rs tmp-generated/rustproto.rs src/