[PM-7067] Remove unnecessary unwraps

[dani-garcia]

Type of change

- [ ] Bug fix
- [ ] New feature development
- [x] Tech debt (refactoring, code cleanup, dependency upgrades, etc)
- [ ] Build/deploy pipeline (DevOps)
- [ ] Other

Objective

This PR replaces the unwraps found in the audit by proper error handling, I've also had a quick look through the rest of the code base and replaced a bunch of others as well.

[codecov]

Codecov Report

Attention: Patch coverage is 23.52941% with 26 lines in your changes are missing coverage. Please review.

Project coverage is 60.67%. Comparing base (596ce17) to head (d414ced).

Files	Patch %	Lines
crates/bitwarden/src/auth/login/password.rs	0.00%	7 Missing ⚠️
crates/bitwarden/src/auth/login/api_key.rs	0.00%	6 Missing ⚠️
crates/bitwarden/src/auth/login/auth_request.rs	0.00%	5 Missing ⚠️
...s/bitwarden/src/mobile/vault/client_attachments.rs	0.00%	2 Missing ⚠️
crates/bitwarden/src/mobile/vault/client_sends.rs	0.00%	2 Missing ⚠️
crates/bw/src/auth/login.rs	0.00%	2 Missing ⚠️
crates/bitwarden-crypto/src/rsa.rs	80.00%	1 Missing ⚠️
crates/bitwarden/src/vault/cipher/login.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #682      +/-   ##
==========================================
+ Coverage   60.61%   60.67%   +0.05%     
==========================================
  Files         170      170              
  Lines       10387    10382       -5     
==========================================
+ Hits         6296     6299       +3     
+ Misses       4091     4083       -8     

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