Fix dependency conflicts in Python sample app with ADOT Python v1.37.0 (#486)

Problem:
ADOT Python E2E tests failed after upgrading ADOT Python’s upstream
dependency from v1.33.1 to v1.37.0.

Cause:
The Python sample app incorrectly specifies a fixed version of
opentelemetry-sdk (v1.33.1) as a dependency, even though it does not
rely on that package. This introduces a version conflict with the
updated ADOT Python and prevents signal generation.

Additionally, opentelemetry-api is pinned to a fixed version, causing
further conflicts with ADOT Python. For the sample app, any v1 API
package should be compatible.

Fix:
Removed opentelemetry-sdk from the dependency list. Relaxed
opentelemetry-api version constraint to >=1.33.1,<2.0.0.

Test:
Ran Python sample app without ADOT → Pass.
Ran Python sample app with ADOT → Pass.
Triggered Python EC2 E2E test → Pass.

By submitting this pull request, I confirm that my contribution is made
under the terms of the Apache 2.0 license.

Author: lukeina2z

.gitignore

@@ -10,4 +10,7 @@ build
 node_modules/
 
 # Ignore Bin files from validator folder
-validator/bin
+validator/bin
+
+.venv/
+__pycache__/

sample-apps/python/django_frontend_service/ec2-requirements.txt

@@ -4,5 +4,4 @@ pymysql==1.1.1
 python-dotenv~=1.0.1
 requests~=2.25.1
 schedule~=1.2.1
-opentelemetry-sdk==1.33.1
-opentelemetry-api==1.33.1
+opentelemetry-api>=1.33.1,<2.0.0