build(deps): bump numpy in /PDF Watermark Remover

Bumps [numpy](https://github.com/numpy/numpy) from 1.22.0rc1 to 1.22.0.
- [Release notes](https://github.com/numpy/numpy/releases)
- [Changelog](https://github.com/numpy/numpy/blob/main/doc/RELEASE_WALKTHROUGH.rst)
- [Commits](numpy/numpy@v1.22.0rc1...v1.22.0)

---
updated-dependencies:
- dependency-name: numpy
  dependency-type: direct:production
...

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

Author: dependabot[bot]

PDF Watermark Remover/requirements.txt

@@ -1,7 +1,7 @@
 scikit_image==0.18.1
 pdf2image==1.15.1
 fpdf==1.7.2
-numpy==1.22.0rc1
+numpy==1.22.0
 Pillow==9.0.1
 PyPDF2==1.27.5
 skimage==0.0