Update dependency signxml to v4.0.3

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
signxml	==4.0.2 -> ==4.0.3

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Release Notes

kislyuk/signxml (signxml)

v4.0.3

Compare Source

===============================

• Fix issue with support for deprecated PyOpenSSL certificates

• Fully remove the ca_path parameter; add docs for signature location
  pinning

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[github-actions]

Test coverage for ea5d9bb

Name                            Stmts   Miss Branch BrPart  Cover   Missing
---------------------------------------------------------------------------
src/certificates_observer.py       59      0      0      0   100%
src/charm.py                       93     19     24      6    74%   62-69, 107, 140-145, 156, 158, 160, 209-217
src/opensearch_observer.py         12      0      0      0   100%
src/state.py                      128     17     14      2    87%   89-90, 135-136, 163-164, 184-185, 188, 207, 209-211, 336-341
src/traefik_route_observer.py      39      0      6      0   100%
src/wazuh.py                      157     43     22      2    73%   101, 197-198, 211-217, 262->exit, 284-307, 318-330, 381-418
---------------------------------------------------------------------------
TOTAL                             488     79     66     10    82%

Static code analysis report

Run started:2024-12-05 18:06:01.410071

Test results:
  No issues identified.

Code scanned:
  Total lines of code: 2492
  Total lines skipped (#nosec): 12
  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):