fix: Error when adding shortcut to Steam

[Kinsteen]

Description

Relevant error:

binary mode doesn't take an errors argument  File "/app/share/bottles/bottles/frontend/utils/threading.py", line 61, in __target
    result = self.task_func(*args, **kwargs)

  File "/app/share/bottles/bottles/backend/managers/steam.py", line 532, in add_shortcut
    with open(os.path.join(c, "shortcuts.vdf"), "rb", errors='replace') as f:

Fixes issue found by "Sean W." on Discord

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Please describe the tests that you ran to verify your changes.
Provide instructions so we can reproduce.

• didn't but should work

[github-actions]

Pylint result on modfied files:

************* Module bottles.backend.managers.steam
bottles/backend/managers/steam.py:29:0: E0401: Unable to import 'gi.repository' (import-error)
bottles/backend/managers/steam.py:98:13: W1514: Using open without explicitly specifying an encoding (unspecified-encoding)
bottles/backend/managers/steam.py:98:54: C0103: Variable name "f" doesn't conform to snake_case naming style (invalid-name)
bottles/backend/managers/steam.py:125:13: W1514: Using open without explicitly specifying an encoding (unspecified-encoding)
bottles/backend/managers/steam.py:125:66: C0103: Variable name "f" doesn't conform to snake_case naming style (invalid-name)
bottles/backend/managers/steam.py:158:13: W1514: Using open without explicitly specifying an encoding (unspecified-encoding)
bottles/backend/managers/steam.py:158:67: C0103: Variable name "f" doesn't conform to snake_case naming style (invalid-name)
bottles/backend/managers/steam.py:175:13: W1514: Using open without explicitly specifying an encoding (unspecified-encoding)
bottles/backend/managers/steam.py:175:49: C0103: Variable name "f" doesn't conform to snake_case naming style (invalid-name)
bottles/backend/managers/steam.py:189:13: W1514: Using open without explicitly specifying an encoding (unspecified-encoding)
bottles/backend/managers/steam.py:189:39: C0103: Variable name "f" doesn't conform to snake_case naming style (invalid-name)
bottles/backend/managers/steam.py:313:16: C0103: Variable name "p" doesn't conform to snake_case naming style (invalid-name)
bottles/backend/managers/steam.py:388:12: C0103: Variable name "p" doesn't conform to snake_case naming style (invalid-name)
bottles/backend/managers/steam.py:390:19: C0103: Variable name "v" doesn't conform to snake_case naming style (invalid-name)
bottles/backend/managers/steam.py:391:16: C0103: Variable name "v" doesn't conform to snake_case naming style (invalid-name)
bottles/backend/managers/steam.py:404:8: C0206: Consider iterating with .items() (consider-using-dict-items)
bottles/backend/managers/steam.py:404:12: C0103: Variable name "e" doesn't conform to snake_case naming style (invalid-name)
bottles/backend/managers/steam.py:406:19: C0103: Variable name "v" doesn't conform to snake_case naming style (invalid-name)
bottles/backend/managers/steam.py:408:20: C0103: Variable name "v" doesn't conform to snake_case naming style (invalid-name)
bottles/backend/managers/steam.py:427:19: C0103: Variable name "v" doesn't conform to snake_case naming style (invalid-name)
bottles/backend/managers/steam.py:428:16: C0103: Variable name "v" doesn't conform to snake_case naming style (invalid-name)
bottles/backend/managers/steam.py:433:12: C0103: Variable name "e" doesn't conform to snake_case naming style (invalid-name)
bottles/backend/managers/steam.py:433:15: C0103: Variable name "v" doesn't conform to snake_case naming style (invalid-name)
bottles/backend/managers/steam.py:469:12: C0103: Variable name "e" doesn't conform to snake_case naming style (invalid-name)
bottles/backend/managers/steam.py:469:15: C0103: Variable name "v" doesn't conform to snake_case naming style (invalid-name)
bottles/backend/managers/steam.py:542:12: C0103: Variable name "c" doesn't conform to snake_case naming style (invalid-name)
bottles/backend/managers/steam.py:547:69: C0103: Variable name "f" doesn't conform to snake_case naming style (invalid-name)
bottles/backend/managers/steam.py:550:20: W0702: No exception type(s) specified (bare-except)
bottles/backend/managers/steam.py:556:65: C0103: Variable name "f" doesn't conform to snake_case naming style (invalid-name)
bottles/backend/managers/steam.py:36:0: W0611: Unused yaml imported from bottles.backend.utils (unused-import)