This revision of go-duktype fixes the following warning

```
duk_logging.c: In function ‘duk__logger_prototype_log_shared’:
duk_logging.c:184:64: warning: ‘Z’ directive writing 1 byte into a region of size between 0 and 9 [-Wformat-overflow=]
  184 |  sprintf((char *) date_buf, "%04d-%02d-%02dT%02d:%02d:%02d.%03dZ",
      |                                                                ^
In file included from /usr/include/stdio.h:867,
                 from duk_logging.c:5:
/usr/include/x86_64-linux-gnu/bits/stdio2.h:36:10: note: ‘__builtin___sprintf_chk’ output between 25 and 85 bytes into a destination of size 32
   36 |   return __builtin___sprintf_chk (__s, __USE_FORTIFY_LEVEL - 1,
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   37 |       __bos (__s), __fmt, __va_arg_pack ());
      |       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
```

go.mod: update golang.org/x/crypto to fix a Go 1.14 race rejection

eth: fix transaction announce/broadcast goroutine leak

This is supposed to fix the occasional failures in 
TestCancel* on Travis CI.

Includes difficulty tests for EIP2384 aka MuirGlacier.

typo in func name in the comment

This was missing because I forgot to wrap it when bind.CallOpts.From
as added.

* les: separate peer into clientPeer and serverPeer

* les: address comments

This makes eth_call and eth_estimateGas use the zero address
as sender when the "from" parameter is not supplied.

Co-authored-by: Felix Lange <fjl@twurst.com>

eth/fetcher: remove randomness from test data

The new goja version supports the 'escape' and 'unescape' built-in functions.
This fixes #20693

params: update CHTs for the v1.9.11 release

This removes the error added in #20597 in favor of a log message at
error level. Failing to start broke a bunch of people's setups and is
probably not the right thing to do for this check.

This fixes a bunch of cases where a timeout in the test would leak
a goroutine.

This adds additional logic to re-resolve the root name of a tree when a
couple of leaf requests have failed. We need this change to avoid
getting into a failure state where leaf requests keep failing for half
an hour when the tree has been updated.

eth: don't enforce minimum broadcast, fix broadcast test

This event was added for the dashboard, but we don't need it anymore
since the dashboard is gone.

travis, appveyor, build: bump builder Go to 1.13.8