build(deps): update imagesize requirement from <1.5,>=1.4 to >=1.4,<2.1

Updates the requirements on [imagesize](https://github.com/shibukawa/imagesize_py) to permit the latest version.
- [Commits](shibukawa/imagesize_py@1.4.0...2.0.0)

---
updated-dependencies:
- dependency-name: imagesize
  dependency-version: 2.0.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]

pyproject.toml

@@ -37,7 +37,7 @@ dependencies = [
     "distro==1.9.* ; sys_platform == 'linux'",
     "dulwich>=0.24.10,<0.24.11",
     "giturlparse>=0.12,<0.15",
-    "imagesize>=1.4,<1.5",
+    "imagesize>=1.4,<2.1",
     "packaging>=22,<27",
     "pypac>=0.16.3,<1",
     "python-rule-engine>=0.5,<1.1",