examples: bump hyper dep to 0.14.11

This version includes patches for a couple of RUSTSEC advisories that
`cargo audit` is mad about. These aren't actually security-critical,
since the affected hyper versions are only used in examples, not in
actual`tracing` crates, but bumping makes `cargo audit` chill out. And
we should keep up to date regardless.

Signed-off-by: Eliza Weisman <[email protected]>

Author: hawkw

examples/Cargo.toml

@@ -36,7 +36,7 @@ env_logger = "0.7"
 # tower examples
 tower = { version = "0.4.4", features = ["full"] }
 http = "0.2"
-hyper = { version = "0.14", features = ["full"] }
+hyper = { version = "0.14.11", features = ["full"] }
 rand = "0.7"
 bytes = "1"
 argh = "0.1.5"