Update pyarrow requirement from <18,>=17.0 to >=17.0,<21

Updates the requirements on [pyarrow](https://github.com/apache/arrow) to permit the latest version.
- [Release notes](https://github.com/apache/arrow/releases)
- [Commits](apache/arrow@go/v17.0.0...apache-arrow-20.0.0)

---
updated-dependencies:
- dependency-name: pyarrow
  dependency-version: 20.0.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]

setup.cfg

@@ -24,7 +24,7 @@ install_requires =
     numpy >=1.21,<2.1
     owslib >=0.27,<0.32
     pillow >=10.0,<12
-    pyarrow >=17.0,<18
+    pyarrow >=17.0,<21
     python-dotenv >=0.19,<1.1
     rasterio >=1.3,<2
     requests >= 2.26,<3