feat: remove support for Python 3.8

Signed-off-by: Jacob Murphy <jkmurphy@google.com>

Author: murphyjacob4

DEVELOPER.md

@@ -32,11 +32,11 @@ These tests are registered as required tests in `.github/sync-repo-settings.yaml
 
 #### Trigger Setup
 
-Cloud Build triggers (for Python versions 3.8 to 3.11) were created with the following specs:
+Cloud Build triggers (for Python versions 3.9 to 3.11) were created with the following specs:
 
 ```YAML
 name: integration-test-pr-py38
-description: Run integration tests on PR for Python 3.8
+description: Run integration tests on PR for Python 3.9
 filename: integration.cloudbuild.yaml
 github:
  name: langchain-google-memorystore-redis-python
@@ -50,7 +50,7 @@ ignoredFiles:
  - .github/**
  - "*.md"
 substitutions:
- _VERSION: "3.8"
+ _VERSION: "3.9"
  _WORKER_POOL: ""
  _REDIS_URL: ""
  _REDIS_CLUSTER_URL: ""

README.rst

@@ -44,7 +44,7 @@ With `virtualenv`_, it’s possible to install this library without needing syst
 Supported Python Versions
 ^^^^^^^^^^^^^^^^^^^^^^^^^
 
-Python >= 3.8
+Python >= 3.9
 
 Mac/Linux
 ^^^^^^^^^

integration.cloudbuild.yaml

@@ -39,7 +39,7 @@ steps:
  - "REDIS_CLUSTER_URL=$_REDIS_CLUSTER_URL"
 
 substitutions:
- _VERSION: "3.8"
+ _VERSION: "3.9"
 
 options:
  pool:

pyproject.toml

@@ -4,7 +4,7 @@ dynamic = ["version"]
 description = "LangChain integrations for Google Cloud Memorystore"
 readme = "README.rst"
 license = {file = "LICENSE"}
-requires-python = ">=3.8"
+requires-python = ">=3.9"
 authors = [
  {name = "Google LLC", email = "googleapis-packages@google.com"}
 ]
@@ -19,7 +19,7 @@ classifiers = [
  "License :: OSI Approved :: Apache Software License",
  "Programming Language :: Python",
  "Programming Language :: Python :: 3",
- "Programming Language :: Python :: 3.8",
+ "Programming Language :: Python :: 3.9",
  "Programming Language :: Python :: 3.9",
  "Programming Language :: Python :: 3.10",
  "Programming Language :: Python :: 3.11",
@@ -56,7 +56,7 @@ target-version = ['py38']
 profile = "black"
 
 [tool.mypy]
-python_version = 3.8
+python_version = 3.9
 warn_unused_configs = true
 
 exclude = [

requirements.txt

@@ -1,5 +1,4 @@
-langchain-core==0.2.31
+langchain-core==0.3.0
 langchain-community==0.2.12
 redis==5.0.8
-numpy===1.24.4; python_version <= "3.8"
-numpy==1.26.4; python_version > "3.8"
+numpy==1.26.4