Update minimum versions in dependencies (#374)

* Update minimum versions in `dependencies`

* Drop space

* Drop unneeded dependencies

* `scikit-image` is a test-only dependency
* `slicerator` is already pulled in by `pims`

So drop both of these as they shouldn't be needed at runtime.

pyproject.toml

@@ -25,12 +25,10 @@ classifiers = [
 ]
 dependencies = [
     "dask[array,dataframe] >=2024.4.1",
-    "numpy >=1.11.3",
-    "scikit-image >=0.19.3",
-    "scipy >=0.19.1",
+    "numpy >=1.18",
+    "scipy >=1.7.0",
     "pandas >=2.0.0",
     "pims >=0.4.1",
-    "slicerator >= 1.1.0",
     "tifffile >=2018.10.18",
 ]