Bump Python version in pyproject.toml (#226)

## Ticket

n/a

## Changes

Changes minimum Python version in pyproject.toml to 3.12.
Fixes two minor unrelated typos in documentation.

## Context for reviewers

The repo includes a `.python-version` set to 3.12, so the minimum
version Poetry requires of dependencies should match.

Alternatively, we could downgrade the .python-version to 3.10, but that
seems unnecessary.

## Testing

All existing tests pass.

README.md

@@ -34,7 +34,7 @@ To get started using the template application on your project:
 
 ## Note on memory usage
 
-If you are using [template-infra](https://github.com/navapbc/template-infra), you may want to increase the [default memory](https://github.com/navapbc/template-infra/blob/main/infra/modules/service/variables.tf#L33) allocated to the ECS service to 2048 Mb (2 Gb) to avoid the gunicorn workers running out of memory. This is because the application is currently [configured to create multiple workers](https://github.com/navapbc/template-application-flask/blob/main/app/gunicorn.conf.py#L24) based on the numberr of virtual CPUs available, which can take up more memory.
+If you are using [template-infra](https://github.com/navapbc/template-infra), you may want to increase the [default memory](https://github.com/navapbc/template-infra/blob/main/infra/modules/service/variables.tf#L33) allocated to the ECS service to 2048 Mb (2 Gb) to avoid the gunicorn workers running out of memory. This is because the application is currently [configured to create multiple workers](https://github.com/navapbc/template-application-flask/blob/main/app/gunicorn.conf.py#L24) based on the number of virtual CPUs available, which can take up more memory.
 
 ## Getting started
 

app/Dockerfile

@@ -99,7 +99,7 @@ RUN poetry install --no-root --only main
 RUN poetry build --format wheel && poetry run pip install 'dist/template_application_flask-0.1.0-py3-none-any.whl'
 
 # Add project's virtual env to the PATH so we can directly run poetry scripts
-# defiend in pyproject.toml
+# defined in pyproject.toml
 ENV PATH="/app/.venv/bin:$PATH"
 
 # Set the host to 0.0.0.0 to make the server available external

app/pyproject.toml

@@ -6,7 +6,7 @@ packages = [{ include = "src" }]
 authors = ["Nava Engineering <[email protected]>"]
 
 [tool.poetry.dependencies]
-python = "^3.10"
+python = "^3.12"
 SQLAlchemy = {version = "^2.0.21", extras = ["mypy"]}
 alembic = "^1.12.0"
 python-dotenv = "^1.0.0"