fix: add remark call to borrow proxy

[mustermeiszer]

Description

Needed for apps

Changes and Descriptions

• Adds pallet_remarks::Call::remark to the allowed calls for ProxyType::Borrow

Checklist:

• I have added Rust doc comments to structs, enums, traits and functions
• I have made corresponding changes to the documentation
• I have performed a self-review of my code
• I have added tests that prove my fix is effective or that my feature works

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 47.92%. Comparing base (f5ce924) to head (aace4d1).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1929      +/-   ##
==========================================
- Coverage   47.95%   47.92%   -0.03%     
==========================================
  Files         181      181              
  Lines       13159    13159              
==========================================
- Hits         6310     6307       -3     
- Misses       6849     6852       +3     

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