Auto merge of #18946 - cynicaldevil:update-h5e, r=nox

Update h5e version

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components/script_layout_interface/Cargo.toml

@@ -16,7 +16,7 @@ canvas_traits = {path = "../canvas_traits"}
 cssparser = "0.22.0"
 euclid = "0.15"
 gfx_traits = {path = "../gfx_traits"}
-html5ever = "0.20.0"
+html5ever = "0.21.0"
 ipc-channel = "0.9"
 libc = "0.2"
 log = "0.3.5"