Update oo-bindgen to 0.8.7 #901

Job	Run time
bindings-macos (x86_64-apple-darwin)	2m 43s
bindings-linux (x86_64-unknown-linux-gnu)	2m 27s
conformance	10m 16s
bindings-linux (i686-unknown-linux-gnu)	2m 58s
bindings-windows (x86_64-pc-windows-msvc, true)	6m 45s
bindings-linux (x86_64-unknown-linux-musl)	2m 32s
bindings-linux (arm-unknown-linux-gnueabihf)	2m 42s
bindings-windows (i686-pc-windows-msvc, false)	5m 52s
bindings-linux (arm-unknown-linux-musleabihf)	2m 41s
documentation	5m 21s
bindings-linux (aarch64-unknown-linux-gnu)	2m 28s
features (--no-default-features)	1m 39s
features (--no-default-features --features serialization)	1m 41s
bindings-linux (aarch64-unknown-linux-musl)	2m 38s
guide	1m 8s
features (--no-default-features --features serial)	1m 44s
bindings-linux (armv7-unknown-linux-gnueabihf)	2m 33s
linting (stable)	56s
features (--no-default-features --features tls)	1m 55s
bindings-linux (arm-unknown-linux-gnueabi)	2m 31s
linting (beta)	53s
test (ubuntu-latest, stable)	1m 25s
test (ubuntu-latest, beta)	1m 34s
test (windows-latest, stable)	3m 41s
test (windows-latest, beta)	2m 55s
packaging	4m 10s
release	0s
	1h 18m 8s

Provide feedback