[MISC] Update tag for same content

[deusebio]

In this PR, I propose a feature to keep updating the base-content tag when reconcile shows that there is no difference between Github and Discourse.

This feature should allow to enable one way Discourse -> Github sync, even when actions have dry-run flag enabled, to prevent to push content to discourse.

[deusebio]

@gregory-schiano thanks for the review! I believe I have addressed your comments!

[github-actions[bot]]

Test coverage for b9732e542ecada58ab2ab0c9a0d734f943f6ecf7

Name                      Stmts   Miss Branch BrPart  Cover   Missing
---------------------------------------------------------------------
src/__init__.py              78      0     34      0   100%
src/action.py               154      0     46      0   100%
src/check.py                 53      0     21      0   100%
src/clients.py               12      0      0      0   100%
src/commit.py                42      0     12      0   100%
src/constants.py              9      0      0      0   100%
src/content.py               50      0     10      0   100%
src/discourse.py            156      0     34      0   100%
src/docs_directory.py        33      0      8      0   100%
src/download.py              23      0      2      0   100%
src/exceptions.py            15      0      0      0   100%
src/index.py                128      0     48      0   100%
src/metadata.py              28      0     12      0   100%
src/migration.py             87      0     27      0   100%
src/navigation_table.py      65      0     20      0   100%
src/reconcile.py             95      0     44      0   100%
src/repository.py           282      0     88      0   100%
src/sort.py                  39      0     22      0   100%
src/types_.py               147      0     22      0   100%
---------------------------------------------------------------------
TOTAL                      1496      0    450      0   100%

Static code analysis report

Working... ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 100% 0:00:01
Run started:2023-09-04 09:55:24.237699

Test results:
    No issues identified.

Code scanned:
    Total lines of code: 15660
    Total lines skipped (#nosec): 14
    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):