Bump dartdoc to ~0.32.3

Change-Id: I2a54e77d2b4f8e9bac1db8a33f188dbd9e348540
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/155833
Reviewed-by: Nate Bosch <[email protected]>

Author: srawlins

DEPS

@@ -97,7 +97,7 @@ vars = {
   "dart_style_tag": "1.3.6",  # Please see the note above before updating.
 
   "chromedriver_tag": "83.0.4103.39",
-  "dartdoc_tag" : "v0.32.2",
+  "dartdoc_rev" : "6d5396c2b4bc415ab9cb3d8212b87ecffd90a272",
   "ffi_rev": "454ab0f9ea6bd06942a983238d8a6818b1357edb",
   "fixnum_rev": "300c3f025e94a72b7b6770e15f76a4de15f77668",
   "glob_rev": "e9f4e6b7ae8abe5071461cf8f47191bb19cf7ef6",
@@ -326,7 +326,7 @@ deps = {
   Var("dart_root") + "/third_party/pkg/dart2js_info":
       Var("dart_git") + "dart2js_info.git" + "@" + Var("dart2js_info_tag"),
   Var("dart_root") + "/third_party/pkg/dartdoc":
-      Var("dart_git") + "dartdoc.git" + "@" + Var("dartdoc_tag"),
+      Var("dart_git") + "dartdoc.git" + "@" + Var("dartdoc_rev"),
   Var("dart_root") + "/third_party/pkg/ffi":
       Var("dart_git") + "ffi.git" + "@" + Var("ffi_rev"),
   Var("dart_root") + "/third_party/pkg/fixnum":