chore(deps): bump the python-packages group across 1 directory with 7 updates

Updates the requirements on bs4, [pypdfium2](https://github.com/pypdfium2-team/pypdfium2), [pyyaml](https://github.com/yaml/pyyaml), [unstructured](https://github.com/Unstructured-IO/unstructured), [pypandoc](https://github.com/JessicaTegner/pypandoc), [httpx-sse](https://github.com/florimondmanca/httpx-sse) and [nltk](https://github.com/nltk/nltk) to permit the latest version.

Updates `bs4` to 0.0.2

Updates `pypdfium2` from 5.6.0 to 5.7.0
- [Release notes](https://github.com/pypdfium2-team/pypdfium2/releases)
- [Commits](https://github.com/pypdfium2-team/pypdfium2/compare/5.6.0...5.7.0)

Updates `pyyaml` to 6.0.3
- [Release notes](https://github.com/yaml/pyyaml/releases)
- [Changelog](https://github.com/yaml/pyyaml/blob/6.0.3/CHANGES)
- [Commits](https://github.com/yaml/pyyaml/compare/6.0.1...6.0.3)

Updates `unstructured` to 0.22.18
- [Release notes](https://github.com/Unstructured-IO/unstructured/releases)
- [Changelog](https://github.com/Unstructured-IO/unstructured/blob/main/CHANGELOG.md)
- [Commits](https://github.com/Unstructured-IO/unstructured/compare/0.21.5...0.22.18)

Updates `pypandoc` to 1.17
- [Release notes](https://github.com/JessicaTegner/pypandoc/releases)
- [Changelog](https://github.com/JessicaTegner/pypandoc/blob/master/release.md)
- [Commits](https://github.com/JessicaTegner/pypandoc/compare/v1.13...v1.17)

Updates `httpx-sse` to 0.4.3
- [Release notes](https://github.com/florimondmanca/httpx-sse/releases)
- [Changelog](https://github.com/florimondmanca/httpx-sse/blob/master/CHANGELOG.md)
- [Commits](https://github.com/florimondmanca/httpx-sse/compare/0.4.0...0.4.3)

Updates `nltk` to 3.9.4
- [Changelog](https://github.com/nltk/nltk/blob/develop/ChangeLog)
- [Commits](https://github.com/nltk/nltk/compare/3.9.1...3.9.4)

---
updated-dependencies:
- dependency-name: bs4
  dependency-version: 0.0.2
  dependency-type: direct:production
  dependency-group: python-packages
- dependency-name: pypdfium2
  dependency-version: 5.7.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: python-packages
- dependency-name: pyyaml
  dependency-version: 6.0.3
  dependency-type: direct:production
  dependency-group: python-packages
- dependency-name: unstructured
  dependency-version: 0.22.18
  dependency-type: direct:production
  dependency-group: python-packages
- dependency-name: pypandoc
  dependency-version: '1.17'
  dependency-type: direct:production
  dependency-group: python-packages
- dependency-name: httpx-sse
  dependency-version: 0.4.3
  dependency-type: direct:production
  dependency-group: python-packages
- dependency-name: nltk
  dependency-version: 3.9.4
  dependency-type: direct:development
  dependency-group: python-packages
...

Signed-off-by: dependabot[bot] <support@github.com>

api/pyproject.toml

@@ -9,7 +9,7 @@ dependencies = [
     "azure-identity==1.25.3",
     "beautifulsoup4==4.14.3",
     "boto3==1.42.88",
-    "bs4~=0.0.1",
+    "bs4~=0.0.2",
     "cachetools~=7.0.5",
     "celery~=5.6.3",
     "charset-normalizer>=3.4.7",
@@ -65,10 +65,10 @@ dependencies = [
     "pydantic~=2.12.5",
     "pydantic-settings~=2.13.1",
     "pyjwt~=2.12.1",
-    "pypdfium2==5.6.0",
+    "pypdfium2==5.7.0",
     "python-docx~=1.2.0",
     "python-dotenv==1.2.2",
-    "pyyaml~=6.0.1",
+    "pyyaml~=6.0.3",
     "readabilipy~=0.3.0",
     "redis[hiredis]~=7.4.0",
     "resend~=2.27.0",
@@ -77,11 +77,11 @@ dependencies = [
     "starlette==1.0.0",
     "tiktoken~=0.12.0",
     "transformers~=5.3.0",
-    "unstructured[docx,epub,md,ppt,pptx]~=0.21.5",
-    "pypandoc~=1.13",
+    "unstructured[docx,epub,md,ppt,pptx]~=0.22.18",
+    "pypandoc~=1.17",
     "yarl~=1.23.0",
     "sseclient-py~=1.9.0",
-    "httpx-sse~=0.4.0",
+    "httpx-sse~=0.4.3",
     "sendgrid~=6.12.5",
     "flask-restx~=1.3.2",
     "packaging~=26.0",
@@ -193,7 +193,7 @@ storage = [
 ############################################################
 # [ Tools ] dependency group
 ############################################################
-tools = ["cloudscraper~=1.2.71", "nltk~=3.9.1"]
+tools = ["cloudscraper~=1.2.71", "nltk~=3.9.4"]
 
 ############################################################
 # [ VDB ] dependency group