RawPlutusData deepcopy error

[juliusfrost]

Describe the bug

pycardano/pycardano/txbuilder.py

Line 1212 in 830090a

setattr(tmp_builder, f.name, deepcopy(getattr(self, f.name)))

During a deepcopy in the line above I get
TypeError: cannot pickle '_cbor2.CBORTag' object

This is because in my tx_builder one UTxO's datum is 'RawPlutusData(data=CBORTag(121, [1000]))'

To Reproduce

git clone https://github.com/OpShin/opshin-pioneer-program.git
git checkout 81e0400 
poetry install
poetry run python src/week06/tests/test_negative_r_timed.py

Logs
https://github.com/OpShin/opshin-pioneer-program/actions/runs/4780231723/jobs/8497846594

Expected behavior
Shouldn't pickle should work on CBORTag? It doesn't look like a very complex data type.

Environment and software version (please complete the following information):

• OS: Windows/Linux
• PyCardano Version: latest

Additional context
Part of OpShin/opshin-pioneer-program#43

[cffls]

CBORTag couldn't be pickled by default:

import cbor2
a = cbor2.CBORTag(121, [1000])
import copy
copy.deepcopy(a)
Traceback (most recent call last):
  File "/Applications/PyCharm.app/Contents/plugins/python/helpers/pydev/pydevconsole.py", line 364, in runcode
    coro = func()
  File "<input>", line 1, in <module>
  File "/opt/homebrew/Cellar/[email protected]/3.9.15/Frameworks/Python.framework/Versions/3.9/lib/python3.9/copy.py", line 161, in deepcopy
TypeError: cannot pickle '_cbor2.CBORTag' object

I will check if there is a quick fix to it.

[cffls]

This PR should be able to fix the problem: #225

[juliusfrost]

This PR should be able to fix the problem: #225

Awesome, thanks!