exclude lost+found for restic

[tesshuflower]

Describe what this PR does
Excludes lost+found from restic backups

fixes: #1033

Is there anything that requires special attention?

Related issues:

[sonarqubecloud]

Quality Gate passed

Kudos, no new issues were introduced!

0 New issues
0 Security Hotspots
No data about Coverage
No data about Duplication

See analysis details on SonarCloud

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 66.9%. Comparing base (9f5cb6a) to head (bc2c74f).
Report is 482 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##            main   #1043     +/-   ##
=======================================
- Coverage   67.0%   66.9%   -0.2%     
=======================================
  Files         55      55             
  Lines       7080    7080             
=======================================
- Hits        4748    4739      -9     
- Misses      2055    2061      +6     
- Partials     277     280      +3     

see 1 file with indirect coverage changes

[tesshuflower]

/cc @JohnStrunk

[JohnStrunk]

/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: JohnStrunk, tesshuflower

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