fix: update logparser for stable JSON log pattern hashing

[mayankpande88]

Description

Updates github.com/nudgebee/logparser to pick up nudgebee/logparser#16 which fixes JSON log pattern hashing.

Previously, normalizeJSONLog dumped all JSON field values into the pattern extractor, causing:

• Empty hash collisions: Large data blobs (HTML, stack traces) overwhelmed the extractor, producing d41d8cd9... (MD5 of empty string) for all affected logs
• Unstable hashes: Metadata fields (timestamps, trace IDs, file paths) changed between log entries from different pods, producing different hashes for the same error

Now extracts patterns only from recognized message fields (msg, message, error, err, reason, log, text) with case-insensitive key matching.

Type of change

• Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

• 33/33 logparser tests pass
• 459 real production JSON logs from Loki validated with 0 empty-hash violations
• Covers Go zerolog, Python structured logs, and custom JSON formats

[gemini-code-assist]

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