chore(release): bump sdk to 2.0.0

Bump the SDK version for the 2.0.0 major release and align every
reference to the never-published 1.8.0:

- conformance test packages: exact pins to ==2.0.0
- otel and insight packages: SDK floor to >=2.0.0 (both build
  against the 2.0 plugin interface)
- test-pypi-otel hatch env: SDK floor to >=2.0.0
- lambda-layer-publish.toml: sdk-version pin to 2.0.0 for the
  next otel layer release

SDK-only release: otel and testing package versions are unchanged.

Author: yaythomas

.github/lambda-layer-publish.toml

@@ -1,2 +1,2 @@
 [layer]
-sdk-version = "1.8.0"
+sdk-version = "2.0.0"

packages/aws-durable-execution-sdk-python-conformance-tests-otel/pyproject.toml

@@ -8,7 +8,7 @@ version = "0.0.0"
 description = "OpenTelemetry conformance test handlers for the AWS Durable Execution SDK for Python, exercised by the aws-durable-execution-conformance-tests OTel suites."
 requires-python = ">=3.11"
 dependencies = [
-  "aws-durable-execution-sdk-python==1.8.0",
+  "aws-durable-execution-sdk-python==2.0.0",
   "aws-durable-execution-sdk-python-otel==0.4.0",
 ]
 

packages/aws-durable-execution-sdk-python-conformance-tests/pyproject.toml

@@ -8,7 +8,7 @@ version = "0.0.0"
 description = "Cross-SDK conformance test handlers for the AWS Durable Execution SDK for Python, exercised by the aws-durable-execution-conformance-tests runner."
 requires-python = ">=3.11"
 dependencies = [
-  "aws-durable-execution-sdk-python==1.8.0",
+  "aws-durable-execution-sdk-python==2.0.0",
 ]
 
 [tool.hatch.build.targets.wheel]

packages/aws-durable-execution-sdk-python-insight/pyproject.toml

@@ -21,9 +21,9 @@ classifiers = [
   "Programming Language :: Python :: Implementation :: CPython",
 ]
 dependencies = [
-  # >=1.8.0: first release carrying the plugin invocation-hook fields
+  # >=2.0.0: first published release carrying the plugin invocation-hook fields
   # (InvocationInfo.execution_input / InvocationEndInfo.execution_result).
-  "aws-durable-execution-sdk-python>=1.8.0",
+  "aws-durable-execution-sdk-python>=2.0.0",
 ]
 
 [project.optional-dependencies]

packages/aws-durable-execution-sdk-python-otel/pyproject.toml

@@ -22,7 +22,7 @@ classifiers = [
   "Programming Language :: Python :: Implementation :: PyPy",
 ]
 dependencies = [
-  "aws-durable-execution-sdk-python>=1.8.0",
+  "aws-durable-execution-sdk-python>=2.0.0",
 ]
 
 [project.entry-points."aws_durable_execution.plugins"]

packages/aws-durable-execution-sdk-python/src/aws_durable_execution_sdk_python/__about__.py

@@ -1,4 +1,4 @@
 # SPDX-FileCopyrightText: 2025-present Amazon.com, Inc. or its affiliates.
 #
 # SPDX-License-Identifier: Apache-2.0
-__version__ = "1.8.0"
+__version__ = "2.0.0"

pyproject.toml

@@ -129,7 +129,7 @@ test = "pytest packages/aws-durable-execution-sdk-python-examples/test {args}"
 
 [tool.hatch.envs.test-pypi-otel]
 dependencies = [
-  "aws-durable-execution-sdk-python>=1.8.0",
+  "aws-durable-execution-sdk-python>=2.0.0",
   "opentelemetry-sdk>=1.20.0",
   "opentelemetry-propagator-aws-xray",
   "pytest",