chore(deps): update dependency jinja2 to v3.1.3

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
jinja2 (changelog)	==3.1.2 -> ==3.1.3

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[github-actions]

Test coverage for 2beb68f

Name                    Stmts   Miss Branch BrPart  Cover   Missing
-------------------------------------------------------------------
src/agent_observer.py      42     24      4      0    39%   53-59, 69-87, 91-96
src/charm.py               53     12      6      2    73%   61->exit, 71, 83-95
src/charm_state.py         59     14      8      1    72%   95-96, 111-115, 154-156, 163, 172-174
src/service.py             93     47     14      1    44%   75-85, 90-94, 106->118, 120, 131-165, 173-177, 185-191
-------------------------------------------------------------------
TOTAL                     247     97     32      4    56%

Static code analysis report

Run started:2024-01-11 06:33:46.224681

Test results:
  No issues identified.

Code scanned:
  Total lines of code: 743
  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):