[BUG] salt-cp UnicodeDecodeError: 'utf-8'

Description of Issue

Copying windows files produces UnicodeDecodeError: 'utf-8' codec can't decode byte 0xba in position 10: invalid start byte

ERROR   ] An un-handled exception was caught by salt's global exception handler:
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xba in position 10: invalid start byte
Traceback (most recent call last):
  File "/usr/bin/salt-cp", line 11, in <module>
    load_entry_point('salt==3002.5', 'console_scripts', 'salt-cp')()
  File "/usr/lib/python3/dist-packages/salt/scripts.py", line 429, in salt_cp
    client.run()
  File "/usr/lib/python3/dist-packages/salt/cli/cp.py", line 53, in run
    cp_.run()
  File "/usr/lib/python3/dist-packages/salt/cli/cp.py", line 145, in run
    ret = self.run_oldstyle()
  File "/usr/lib/python3/dist-packages/salt/cli/cp.py", line 153, in run_oldstyle
    arg = [self._load_files(), self.opts["dest"]]
  File "/usr/lib/python3/dist-packages/salt/cli/cp.py", line 128, in _load_files
    files.update(self._file_dict(fn_))
  File "/usr/lib/python3/dist-packages/salt/cli/cp.py", line 117, in _file_dict
    data = fp_.read()
  File "/usr/lib/python3.5/codecs.py", line 321, in decode
    (result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xba in position 10: invalid start byte
Traceback (most recent call last):
  File "/usr/bin/salt-cp", line 11, in <module>
    load_entry_point('salt==3002.5', 'console_scripts', 'salt-cp')()
  File "/usr/lib/python3/dist-packages/salt/scripts.py", line 429, in salt_cp
    client.run()
  File "/usr/lib/python3/dist-packages/salt/cli/cp.py", line 53, in run
    cp_.run()
  File "/usr/lib/python3/dist-packages/salt/cli/cp.py", line 145, in run
    ret = self.run_oldstyle()
  File "/usr/lib/python3/dist-packages/salt/cli/cp.py", line 153, in run_oldstyle
    arg = [self._load_files(), self.opts["dest"]]
  File "/usr/lib/python3/dist-packages/salt/cli/cp.py", line 128, in _load_files
    files.update(self._file_dict(fn_))
  File "/usr/lib/python3/dist-packages/salt/cli/cp.py", line 117, in _file_dict
    data = fp_.read()
  File "/usr/lib/python3.5/codecs.py", line 321, in decode
    (result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xba in position 10: invalid start byte

Copying files created on linux machine working fine.

Setup

master:

Salt Version:
          Salt: 3002.5
 
Dependency Versions:
          cffi: 1.13.2
      cherrypy: 3.5.0
      dateutil: 2.5.3
     docker-py: 1.9.0
         gitdb: 2.0.0
     gitpython: 2.1.1
        Jinja2: 2.9.4
       libgit2: 0.28.4
      M2Crypto: Not Installed
          Mako: Not Installed
       msgpack: 0.6.2
  msgpack-pure: Not Installed
  mysql-python: Not Installed
     pycparser: 2.19
      pycrypto: 2.6.1
  pycryptodome: 3.6.1
        pygit2: 1.0.2
        Python: 3.5.3 (default, Nov 18 2020, 21:09:16)
  python-gnupg: Not Installed
        PyYAML: 3.12
         PyZMQ: 17.1.2
         smmap: 2.0.1
       timelib: Not Installed
       Tornado: 4.5.3
           ZMQ: 4.2.1
 
System Versions:
          dist: debian 9 stretch
        locale: UTF-8
       machine: x86_64
       release: 4.9.0-14-amd64
        system: Linux
       version: Debian GNU/Linux 9 stretch

Minion:
`PS C:\salt> ./salt-minion --versions
Salt Version:
Salt: 3001.4

Dependency Versions:
cffi: 1.12.2
cherrypy: 17.4.1
dateutil: 2.8.0
docker-py: Not Installed
gitdb: 2.0.5
gitpython: Not Installed
Jinja2: 2.10.1
libgit2: Not Installed
M2Crypto: Not Installed
Mako: 1.0.7
msgpack-pure: Not Installed
msgpack-python: 1.0.0
mysql-python: Not Installed
pycparser: 2.19
pycrypto: Not Installed
pycryptodome: 3.9.7
pygit2: Not Installed
Python: 3.7.4 (tags/v3.7.4:e09359112e, Jul 8 2019, 20:34:20) [MSC v.1916 64 bit (AMD64)]
python-gnupg: 0.4.4
PyYAML: 5.3.1
PyZMQ: 18.0.1
smmap: 2.0.5
timelib: 0.2.4
Tornado: 4.5.3
ZMQ: 4.3.1

System Versions:
dist:
locale: cp1250
machine: AMD64
release: 2016Server
system: Windows
version: 2016Server 10.0.14393 SP0`

Steps to Reproduce Issue

download file from windows in my case it's https://www.catalog.update.microsoft.com/Search.aspx?q=KB4340355
copy files to minion using:
salt-cp 'server' sqlserver2016kb4340355.exe "C:\\scripts\\sqlserver2016kb4340355.exe"

Workaround:

When i use --chunked file is successfully copied to windows but copying is very slow :(
salt-cp -C 'server' sqlserver2016kb4340355.exe "C:\scripts\sqlserver2016kb4340355.exe"

I tried to make a zip file at linux machine after download this file but it also throws errors

Versions Report

Master: 3002.5 @ debian 9 stretch
Minion: 3001.4 @ 2016Server 10.0.14393 SP0