- Bump Go version in CI, Makefile, and go.mod
- Replace deprecated ioutil and strings.Title usages
- Update GitHub Actions and all module dependencies

Signed-off-by: Jai Pradeesh <jai@deepsource.io>

Signed-off-by: Sourya Vatsyayan <sourya@deepsource.io>

Signed-off-by: Sourya Vatsyayan <sourya@deepsource.io>

Signed-off-by: Sourya Vatsyayan <sourya@deepsource.io>

- wait for mock HTTP server to be ready before running tests
- prevents flaky test failures due to connection refused errors

- fixes RVV-B0012 DeepSource issues for unused parameters

- increases wait iterations from 50 to 200 for more reliability

- Add authentication section with login examples (browser, token, enterprise)
- Document OIDC authentication for GitHub Actions
- Expand command reference with subcommand details
- Add auth, config, issues, and repo subcommand descriptions

- login: extract getConfig, confirmFromUser, selectFromOptions, getSingleLineInput
- logout: extract getConfig, confirmFromUser
- refresh: extract getConfig, newDeepsource
- status: extract getConfig

Enables mocking of dependencies in unit tests

Enables mocking of survey.AskOne in unit tests for prompt utilities

- auth/login: test command creation, interactive login flows, re-auth prompts
- auth/logout: test config errors, not-logged-in state, user cancellation
- auth/refresh: test config errors, client creation, token refresh
- auth/status: test config errors, not-logged-in, valid/expired tokens
- config/generate: test config generation with analyzers, transformers, patterns
- report: test sanitize, validateKey, git commit detection, makeQuery
- utils/prompt: test ConfirmFromUser, SelectFromOptions, GetSingleLineInput
- utils/cmd_validator: test ExactArgs, MaxNArgs, NoArgs validators

- Use underscore prefix for unused cobra command parameters
- Refactor logout to use struct fields instead of package-level vars
- Fix mutex double-unlock issues in status_test.go
- Replace deprecated ioutil.ReadFile with os.ReadFile
- Convert value receivers to pointer receivers where appropriate
- Extract setupGitRepo helper and use table-driven tests
- Improve error handling with io.ReadAll and json.NewEncoder
- Add configFilePermissions constant and clean up config.go
- Use DialTimeout for server readiness checks
- Fix test loop variable capture issues