fix: 405 method not allowed errors caused by trailing forward-slashes

[tangowithfoxtrot]

🎟️ Tracking

https://bitwarden.atlassian.net/browse/SM-1162

📔 Objective

Trim trailing forward-slashes on server URLs to avoid an ambiguous 405 method not allowed error in our CLI. All methods of input should be handled:

• using the --server-url arg
• using the BWS_SERVER_URL environment variable
• reading from the server-{base,api,identity} keys in the config file
• writing to the config file with bws config set server-{base,api,identity}

In any of those cases, the changes here should drop any trailing forward-slashes successfully.

⏰ Reminders before review

• Contributor guidelines followed
• All formatters and local linters executed and passed
• Written new unit and / or integration tests where applicable
• Protected functional changes with optionality (feature flags)
• Used internationalization (i18n) for all UI strings
• CI builds passed
• Communicated to DevOps any deployment requirements
• Updated any necessary documentation (Confluence, contributing docs) or informed the documentation
  team

🦮 Reviewer guidelines

• 👍 (:+1:) or similar for great changes
• 📝 (:memo:) or ℹ️ (:information_source:) for notes or general info
• ❓ (:question:) for questions
• 🤔 (:thinking:) or 💭 (:thought_balloon:) for more open inquiry that's not quite a confirmed
  issue and could potentially benefit from discussion
• 🎨 (:art:) for suggestions / improvements
• ❌ (:x:) or ⚠️ (:warning:) for more significant problems or concerns needing attention
• 🌱 (:seedling:) or ♻️ (:recycle:) for future improvements or indications of technical debt
• ⛏ (:pick:) for minor or nitpick changes

[github-actions]

Checkmarx One – Scan Summary & Details – cc6e1585-b25b-4866-b216-a0ff3ef089db

Great job! No new security vulnerabilities introduced in this pull request

[codecov]

Codecov Report

❌ Patch coverage is 90.38462% with 5 lines in your changes missing coverage. Please review.
✅ Project coverage is 12.17%. Comparing base (9f823d7) to head (313022f).

Files with missing lines	Patch %	Lines
crates/bws/src/cli.rs	0.00%	5 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff            @@
##            main    #1348      +/-   ##
=========================================
+ Coverage   7.32%   12.17%   +4.84%     
=========================================
  Files         20       21       +1     
  Lines       1378     1429      +51     
=========================================
+ Hits         101      174      +73     
+ Misses      1277     1255      -22     

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[cd-bitwarden]

Everything looks great 👍