fix: Use slashes in folder names instead of division slashes added by Gazer

[drstrangelooker]

When Gazer exports folders it replaces slashes with division slashes (Unicode character 2215) in the corresponding local folder name, and when Looker Deployer is importing content it's using the local folder names to create folders in the target Looker instance, which results in folders whose names contain slashes getting slightly mangled to contain division slashes when they're imported. This PR attempts to restore the original folder names containing normal slashes when importing.

Copy of #152 running from a local branch so tests run properly.

[github-actions]

Python Tests

    6 files  ±0  168 suites  ±0   2s ⏱️ ±0s
  89 tests ±0    89 ✔️ ±0  0 💤 ±0  0 ❌ ±0 
429 runs  ±0  429 ✔️ ±0  0 💤 ±0  0 ❌ ±0 

Results for commit 9710a30. ± Comparison against base commit 9719386.

[github-actions]

Python Tests

    6 files  ±0  168 suites  ±0   2s ⏱️ ±0s
  89 tests ±0    89 ✔️ ±0  0 💤 ±0  0 ❌ ±0 
429 runs  ±0  429 ✔️ ±0  0 💤 ±0  0 ❌ ±0 

Results for commit 5f6b2e5. ± Comparison against base commit 9719386.