Restrict openssl by 0.10.36

This is required by -Zminimal-versions nightly check.

For openssl 0.10.35 the build would succeed if only
openssl-sys is restricted by 0.9.66 explicitly
(by default it mistakenly limited by 0.9.65).

For openssl <0.10.35 or openssl-sys<0.9.66
the build is failed.

async-nats/Cargo.toml

@@ -42,6 +42,7 @@ webpki = { package = "rustls-webpki", version = "0.101.2", features = ["alloc",
 
 # for -Z minimal-versions
 rustls = "0.21.6" # used by tokio-rustls 0.24.0
+openssl = "0.10.36"
 
 [dev-dependencies]
 criterion =  { version = "0.5", features = ["async_tokio"]}