fix: replace bare except with specific exception types

[lxcxjxhx]

Summary

Replace bare \except:\ clauses with specific exception types to improve error handling precision.

Changes

• dojo/api_v2/serializers.py: Replace bare \except:\ with \Development_Environment.DoesNotExist\ in environment lookup
• dojo/endpoint/models.py: Replace bare \except:\ with (ValueError, ValidationError)\ in URL cleaning and \is_broken\ property
• dojo/utils.py: Replace bare \except:\ with \Exception\ in \get_period_counts\ query fallbacks

Rationale

Bare \except:\ clauses catch \SystemExit, \KeyboardInterrupt, and \GeneratorExit\ in addition to regular exceptions. This can:

• Prevent users from interrupting the application with Ctrl+C
• Hide system-level errors that should propagate
• Make debugging more difficult by catching unexpected errors silently

Using specific exception types makes the error handling more precise and prevents these issues.

[dryrunsecurity]

This pull request contains critical security findings because an unauthorized author modified multiple sensitive codepaths, including dojo/api_v2/serializers.py, dojo/endpoint/models.py, and dojo/utils.py. These changes violate the configured access controls for sensitive files, resulting in a failing risk threshold.

🔴 Configured Sensitive Codepath Modified by Non-Allowed Author in dojo/api_v2/serializers.py (drs_169585d6)

Vulnerability	Configured Sensitive Codepath Modified by Non-Allowed Author
Description	File 'dojo/api_v2/serializers.py' matches configured sensitive codepath pattern 'dojo/api_v2/*.py' and was modified by 'lxcxjxhx' (commit d49a6e4) who is not in the allowed authors list.

🔴 Configured Sensitive Codepath Modified by Non-Allowed Author in dojo/endpoint/models.py (drs_1d3408a1)

Vulnerability	Configured Sensitive Codepath Modified by Non-Allowed Author
Description	File 'dojo/endpoint/models.py' matches configured sensitive codepath pattern 'dojo/endpoint/*.py' and was modified by 'lxcxjxhx' (commit d49a6e4) who is not in the allowed authors list.

🔴 Configured Sensitive Codepath Modified by Non-Allowed Author in dojo/utils.py (drs_d7b00d0f)

Vulnerability	Configured Sensitive Codepath Modified by Non-Allowed Author
Description	File 'dojo/utils.py' matches configured sensitive codepath pattern 'dojo/utils.py' and was modified by 'lxcxjxhx' (commit d49a6e4) who is not in the allowed authors list.

We've notified @mtesauro.

---

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[github-actions]

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[github-actions]

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