Bump mediapipe from 0.10.20 to 0.10.21

Bumps [mediapipe](https://github.com/google/mediapipe) from 0.10.20 to 0.10.21.
- [Release notes](https://github.com/google/mediapipe/releases)
- [Commits](google-ai-edge/mediapipe@v0.10.20...v0.10.21)

---
updated-dependencies:
- dependency-name: mediapipe
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Diff for: Hand-Motion-Detection/requirements.txt

@@ -1,3 +1,3 @@
 numpy==2.2.3
 opencv_python==4.11.0.86
-mediapipe==0.10.20
+mediapipe==0.10.21

Diff for: requirements_with_versions.txt

@@ -102,7 +102,7 @@ qrcode==8.0
 googletrans==4.0.2
 slab==1.7.0
 psutil==7.0.0
-mediapipe==0.10.20
+mediapipe==0.10.21
 rich==13.9.4
 httplib2==0.22.0
 protobuf==5.29.3