chore(deps): update actions/upload-artifact action to v4

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/upload-artifact	action	major	v3 -> v4

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Release Notes

actions/upload-artifact (actions/upload-artifact)

v4

Compare Source

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Configuration

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[renovate]

Edited/Blocked Notification

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[github-actions]

Test coverage for a282e95

Name           Stmts   Miss Branch BrPart  Cover   Missing
----------------------------------------------------------
src/charm.py     189      0     68      1    99%   308->311
----------------------------------------------------------
TOTAL            189      0     68      1    99%

Static code analysis report

Run started:2024-01-04 19:57:43.110154

Test results:
  No issues identified.

Code scanned:
  Total lines of code: 1106
  Total lines skipped (#nosec): 0
  Total potential issues skipped due to specifically being disabled (e.g., #nosec BXXX): 0

Run metrics:
  Total issues (by severity):
  	Undefined: 0
  	Low: 0
  	Medium: 0
  	High: 0
  Total issues (by confidence):
  	Undefined: 0
  	Low: 0
  	Medium: 0
  	High: 0
Files skipped (0):