Open-aea

AEA:
- Fixes protocol header string regex.
- Adds `FIELDS_WITH_NESTED_FIELDS` and `NESTED_FIELDS_ALLOWED_TO_UPDATE` in the base config class.
- Introduces `aea test` command group:
- `aea test item_type public_id`: Run all tests of the AEA package specified by `item_type` and `public_id`
- `aea test by-path package_dir`: Run all the tests of the AEA package located at `package_dir`
- `aea test packages`: Runs all tests in the `packages` (local registry) folder.
- `aea test`: Runs tests in the `tests` folder, if present in the agent folder.

Tests:
- Ports tests for the following packages into their respective package folders
- `packages/valory/protocols/acn`
- `packages/valory/protocols/tendermint`
- `packages/valory/connections/p2p_libp2p/libp2p_node/dht/dhttests`
- `packages/open_aea/protocols/signing`
- `packages/fetchai/skills/generic_seller`
- `packages/fetchai/skills/http_echo`
- `packages/fetchai/skills/echo`
- `packages/fetchai/skills/erc1155_client`
- `packages/fetchai/skills/gym`
- `packages/fetchai/skills/erc1155_deploy`
- `packages/fetchai/skills/generic_buyer`
- `packages/fetchai/protocols/http`
- `packages/fetchai/protocols/fipa`
- `packages/fetchai/protocols/default`
- `packages/fetchai/protocols/state_update`
- `packages/fetchai/protocols/ledger_api`
- `packages/fetchai/protocols/oef_search`
- `packages/fetchai/protocols/contract_api`
- `packages/fetchai/protocols/gym`
- `packages/fetchai/protocols/tac`
- `packages/fetchai/connections/ledger`
- `packages/fetchai/connections/http_server`
- `packages/fetchai/connections/local`
- `packages/fetchai/connections/stub`
- `packages/fetchai/connections/gym`
- `packages/fetchai/connections/http_client`
- `packages/fetchai/contracts/erc1155`

AEA:
- Updates the deploy image Dockerfile to use Python 3.10
- Updates the deploy image Dockerfile to utilize remote registry when fetching components
- Improves handling for variables with potential none values

Chore:
- Bumps `mistune` to a secure version
- Bumps `protobuf` dependencies to address `dependabot` security warning
- Improves command regex on `scripts/check_doc_ipfs_hashes.py`
- Updates `tox` definitions and `Makefile` targets to align with the latest changes

AEA:
- Adds schema validation for global CLI config file
- Improves the dependency resolver
- Provides more useful error messages when circular package dependencies are present
- Adds check to make sure all the packages referenced in an AEA package's `config.yaml` are being used as imports in the code, and vice versa that all imported packages are reference in the `config.yaml`
- Adds check to make sure all the packages in an AEA project are listed in the `aea-config.yaml`
- Fixes a bug related to async function call on `TCPSocketProtocol`
- Updates transaction building to handle gas estimation properly
- Update `ContractConfig` class to include contract dependencies in the dependency list

Docs:
- Adds missing command on the `http-echo-demo.md` doc.

Chore:
- Add the gitleaks scan job

AEA:
- Updates the protocol generator to use `protocol generator version` as a header rather than using framework version

Chore:
- Cleans up remnants of py3.6
- Updated the release process
- Adds skaffold profiles for releases

AEA:
- Adds property to determine if skill is abstract in context
- Fixes ACN process termination
- Refactors ACN tests and adds auto multiplex
- Randomizes libp2p test directories
- Resolves an SSL issue

Chore:
- Updates the consistency-check script to verify that packages have been pushed to IPFS

AEA:
- Add test to check package hash on signing protocol constant
- Adds support for CID v1 IPFS hashes

Plugins:
- Updates the `IPFSDaemon` to perform ipfs installation check only when initialised locally.

Packages:
- Upgrades certificate request dates on connection components
- Adds extra logging on internode communication

Docs:
- Adds a FAQ section