bump version to 1.8.0

Merge pull request elixir-tesla#539 from elixir-tesla/upgrade-deps

chore: upgrade deps to latest versions

Merge pull request elixir-tesla#577 from carrascoacd/acc/fix-log-level

Ensure connection errors return the expected error tuple

Merge pull request elixir-tesla#568 from carrascoacd/acc/add-context-…

…propagation

OTel - Add context propagation

chore: allow castore 1.0

chore: fix version