chore: update lopdf to firecrawl fork with uncompressed stream fix

Points to firecrawl/lopdf@edf6279 which fixes decompressed_content()
for streams without a /Filter entry. Our xobjects.rs workaround remains
as a defensive fallback.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Cargo.toml

@@ -10,7 +10,7 @@ repository = "https://github.com/firecrawl/pdf-inspector"
 
 [dependencies]
 # PDF parsing
-lopdf = { git = "https://github.com/J-F-Liu/lopdf", rev = "845cd3d4648d9cefb7b5def5fb387df61ba3a0e5", features = ["rayon"] }
+lopdf = { git = "https://github.com/firecrawl/lopdf", rev = "edf6279", features = ["rayon"] }
 
 # Error handling
 thiserror = "2.0"