fix: resolve PermissionBlock CDP unmarshal errors

[NewdlDewdl]

Fixes #131.

Root cause: Chrome now emits newer PrivateNetworkRequestPolicy values (PermissionBlock / PermissionWarn), and the pinned CDP dependency was too old to decode them. That led to repeated unmarshal errors during ChromeDP scraping.

Changes in this PR:

• bumped github.com/chromedp/cdproto to v0.0.0-20250803210736-d308e07a266d
• bumped github.com/chromedp/chromedp to v0.14.2 for compatibility with the updated protocol package
• added regression test utils/chromedp_protocol_test.go to verify enum unmarshal for old + new policy values

Verification run:

• go build ./...
• go test ./parser ./uploader
• go test ./utils -run TestPrivateNetworkRequestPolicyUnmarshal

All pass locally.

Note: full go test ./... still depends on local .env secrets for existing credentialed tests in utils.

[NewdlDewdl]

@mikehquan19 pushed the dependency fix plus regression coverage.

Verification run locally:

• go build ./...
• go test ./parser ./uploader
• go test ./utils -run TestPrivateNetworkRequestPolicyUnmarshal

[mikehquan19]

Won't approve this one since it's AI-generated