Bump the pip group across 1 directory with 3 updates

Bumps the pip group with 3 updates in the / directory: [nltk](https://github.com/nltk/nltk), [opencv-python](https://github.com/opencv/opencv-python) and [sqlitedict](https://github.com/piskvorky/sqlitedict).


Updates `nltk` from 3.8.1 to 3.9
- [Changelog](https://github.com/nltk/nltk/blob/develop/ChangeLog)
- [Commits](nltk/nltk@3.8.1...3.9)

Updates `opencv-python` from 4.7.0.72 to 4.8.1.78
- [Release notes](https://github.com/opencv/opencv-python/releases)
- [Commits](https://github.com/opencv/opencv-python/commits)

Updates `sqlitedict` from 1.7.0 to 2.1.0
- [Release notes](https://github.com/piskvorky/sqlitedict/releases)
- [Changelog](https://github.com/piskvorky/sqlitedict/blob/master/CHANGELOG.md)
- [Commits](piskvorky/sqlitedict@1.7.0...v2.1.0)

---
updated-dependencies:
- dependency-name: nltk
  dependency-type: direct:production
  dependency-group: pip
- dependency-name: opencv-python
  dependency-type: direct:production
  dependency-group: pip
- dependency-name: sqlitedict
  dependency-type: direct:production
  dependency-group: pip
...

Signed-off-by: dependabot[bot] <[email protected]>

requirements.txt

@@ -167,7 +167,7 @@ natsort==8.4.0
 nest-asyncio==1.6.0
 networkx==3.2.1
 ninja==1.11.1.1
-nltk==3.8.1
+nltk==3.9
 nncf==2.13.0
 nodeenv==1.9.1
 NudeNet==2.0.9
@@ -179,7 +179,7 @@ onnxruntime==1.19.2
 open_clip_torch==2.26.1
 openai==1.48.0
 OpenCC==1.1.6
-opencv-python==4.7.0.72
+opencv-python==4.8.1.78
 opencv-python-headless==4.10.0.84
 openvino==2024.4.0
 openvino-telemetry==2024.1.0
@@ -276,7 +276,7 @@ soupsieve==2.6
 spacy==3.7.6
 spacy-legacy==3.0.12
 spacy-loggers==1.0.5
-sqlitedict==1.7.0
+sqlitedict==2.1.0
 srsly==2.4.8
 surge-api==1.1.4
 sympy==1.11.1

setup.cfg

@@ -39,7 +39,7 @@ install_requires=
     zstandard~=0.18.0
     # sqlitedict==2.0.0 is slow! https://github.com/RaRe-Technologies/sqlitedict/issues/152
     # Keep sqlitedict version at 1.7.0.
-    sqlitedict~=1.7
+    sqlitedict>=1.7,<3.0
     bottle~=0.12.23
 
     # Basic Scenarios
@@ -48,7 +48,7 @@ install_requires=
     pyarrow-hotfix~=0.6  # Hotfix for CVE-2023-47248
 
     # Basic metrics
-    nltk~=3.7,<3.8.2  # See https://github.com/stanford-crfm/helm/issues/2926
+    nltk>=3.7,<4.0  # See https://github.com/stanford-crfm/helm/issues/2926
     rouge-score~=0.1.2
     scipy~=1.10
     uncertainty-calibration~=0.1.4
@@ -218,7 +218,7 @@ image2struct =
     html2text~=2024.2.26
 
     # Metrics
-    opencv-python~=4.7.0.68
+    opencv-python>=4.7.0.68,<4.8.2.0
     lpips~=0.1.4
     imagehash~=4.3.1 # for caching
 
@@ -254,7 +254,7 @@ heim =
     lpips~=0.1.4
     multilingual-clip~=1.0.10
     NudeNet~=2.0.9
-    opencv-python~=4.7.0.68
+    opencv-python>=4.7.0.68,<4.8.2.0
     pytorch-fid~=0.3.0
     tensorflow~=2.11
     timm~=0.6.12