Update min requried version of python to 3.9 in pyproject.toml. The other changes will come in #1043 that is soon to be merged.

Author: timsaucer

pyproject.toml

@@ -24,7 +24,7 @@ name = "datafusion"
 description = "Build and run queries against data"
 readme = "README.md"
 license = { file = "LICENSE.txt" }
-requires-python = ">=3.8"
+requires-python = ">=3.9"
 keywords = ["datafusion", "dataframe", "rust", "query-engine"]
 classifiers = [
     "Development Status :: 2 - Pre-Alpha",
@@ -35,7 +35,6 @@ classifiers = [
     "Operating System :: Microsoft :: Windows",
     "Operating System :: POSIX :: Linux",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",