chore(deps): update actions/upload-artifact action to v5

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/upload-artifact	action	major	v4 -> v5

---

Release Notes

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

v5

Compare Source

---

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR was generated by Mend Renovate. View the repository job log.

[github-actions]

Test results for commit 990375e

Test coverage for 990375e

Name           Stmts   Miss Branch BrPart  Cover   Missing
----------------------------------------------------------
src/charm.py      54      9      2      1    82%   72-78, 99-101, 114-116
src/state.py      75      1     14      1    98%   159
----------------------------------------------------------
TOTAL            129     10     16      2    92%

Static code analysis report

Run started:2025-10-24 21:03:47.112837

Test results:
  No issues identified.

Code scanned:
  Total lines of code: 923
  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):

[github-actions]

Test results for commit 990375e

Test coverage for 990375e

Name            Stmts   Miss Branch BrPart  Cover   Missing
-----------------------------------------------------------
src/charm.py      140     31     36     14    73%   103-106, 111-112, 116, 123-125, 130->136, 135, 138, 149-150, 152, 154->160, 159, 165-166, 173-176, 209-210, 231, 237, 240, 255-278
src/policy.py      98     68     20      0    25%   24-26, 31, 40-44, 55, 72-76, 89-103, 133-134, 142, 175-196, 219-238, 249-257, 265-271, 279-284, 295-298
src/relay.py      142      8     46      2    95%   154->177, 251-267, 397-400
src/timer.py       11      4      0      0    64%   48-61
-----------------------------------------------------------
TOTAL             391    111    102     16    70%

Static code analysis report

Run started:2025-10-24 21:03:44.720917

Test results:
  No issues identified.

Code scanned:
  Total lines of code: 1801
  Total lines skipped (#nosec): 6
  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):

[github-actions]

Test results for commit 990375e

Test coverage for 990375e

Name           Stmts   Miss Branch BrPart  Cover   Missing
----------------------------------------------------------
src/charm.py     176     36     38      8    78%   67-69, 76-77, 81, 94, 97-98, 128, 170-200, 213->228, 221-227, 353-367
src/squid.py     110      6     34      5    92%   65, 75, 179, 270, 319, 328, 350->357, 352->354
----------------------------------------------------------
TOTAL            286     42     72     13    84%

Static code analysis report

Run started:2025-10-24 21:03:12.255959

Test results:
  No issues identified.

Code scanned:
  Total lines of code: 2242
  Total lines skipped (#nosec): 1
  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):