Resolve licensing by updating tinyvec 0.3.3 -> 0.3.4

Per https://github.com/rust-lang/rust/pull/75555#issuecomment-675090858
Zlib license might be OK. "OR Apache-2.0 OR MIT" definitely is.
unicode-normalization depends on this and rustc_parse, clippy,
and many other things depend on unicode-normalization.

Cargo.lock

@@ -4701,9 +4701,9 @@ dependencies = [
 
 [[package]]
 name = "tinyvec"
-version = "0.3.3"
+version = "0.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "53953d2d3a5ad81d9f844a32f14ebb121f50b650cd59d0ee2a07cf13c617efed"
+checksum = "238ce071d267c5710f9d31451efec16c5ee22de34df17cc05e56cbc92e967117"
 
 [[package]]
 name = "tokio"

src/tools/tidy/src/deps.rs

@@ -18,6 +18,7 @@ const LICENSES: &[&str] = &[
     "Unlicense/MIT",
     "Unlicense OR MIT",
     "0BSD OR MIT OR Apache-2.0", // adler license
+    "Zlib OR Apache-2.0 OR MIT", // tinyvec
 ];
 
 /// These are exceptions to Rust's permissive licensing policy, and