perf: upgrade pdfminer-six to 20260107 (#536)

Fixes ~15-18% performance regression introduced in 20251230 where
f-strings were evaluated eagerly even when logging was disabled.

See: pdfminer/pdfminer.six#1233
Fix: pdfminer/pdfminer.six#1234

<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> Addresses a pdf parsing performance issue by updating dependency and
aligning versioning.
> 
> - Upgrade `pdfminer-six` to `20260107` in `requirements/base.txt` and
constrain it in `requirements/constraints.in` (perf fix)
> - Bump version to `0.0.92` in `prepline_general/api/__version__.py`
and `preprocessing-pipeline-family.yaml`
> - Update `CHANGELOG.md` with the perf fix note
> 
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
cd8a7ef. This will update automatically
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[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

Author: CyMule

CHANGELOG.md

@@ -1,3 +1,6 @@
+## 0.0.92
+* Upgrade pdfminer-six to 20260107 to fix ~15-18% performance regression from eager f-string evaluation
+
 ## 0.0.91
 * Upgrade packages to resolve CVEs
 

prepline_general/api/__version__.py

@@ -1 +1 @@
-__version__ = "0.0.91"  # pragma: no cover
+__version__ = "0.0.92"  # pragma: no cover

preprocessing-pipeline-family.yaml

@@ -1,2 +1,2 @@
 name: general
-version: 0.0.91
+version: 0.0.92

requirements/base.txt

@@ -216,8 +216,9 @@ pandas==2.3.3
     #   unstructured-inference
 pdf2image==1.17.0
     # via unstructured
-pdfminer-six==20251230
+pdfminer-six==20260107
     # via
+    #   -c requirements/constraints.in
     #   unstructured
     #   unstructured-inference
 pi-heif==1.1.1

requirements/constraints.in

@@ -5,4 +5,6 @@
 ####################################################################################################
 numpy<2.0.0
 # later versions of Starlette break middleware
-starlette==0.41.2
+starlette==0.41.2
+# pdfminer.six 20260107 includes performance fix
+pdfminer-six==20260107