Add dfx deps default init args

This PR adds default init args for the dfx deps feature. The arg
will disable the captcha, as it is not needed in dev environments.

scripts/build

@@ -168,12 +168,15 @@ function build_canister() {
               asset_name="internet_identity_dev.wasm.gz"
               wasm_url="https://github.com/dfinity/internet-identity/releases/download/$release/$asset_name"
               wasm_hash_url="https://github.com/dfinity/internet-identity/releases/download/$release/$asset_name.sha256"
+              # init_arg that disables the captcha, appropriate for the dev build
+              init_arg="(opt record { captcha_config = opt record { max_unsolved_captchas= 50:nat64; captcha_trigger = variant {Static = variant {CaptchaDisabled}}}})"
               init_guide="Use '(null)' for sensible defaults. See the candid interface for more details."
               metadata_json=$(echo '{}' | jq -cMr \
                   --arg wasm_url "$wasm_url" \
                   --arg wasm_hash_url "$wasm_hash_url" \
+                  --arg init_arg "$init_arg" \
                   --arg init_guide "$init_guide" \
-                  '. | .pullable = { wasm_url: $wasm_url, wasm_hash_url: $wasm_hash_url, dependencies: [], init_guide: $init_guide} ')
+                  '. | .pullable = { wasm_url: $wasm_url, wasm_hash_url: $wasm_hash_url, dependencies: [], init_arg: $init_arg, init_guide: $init_guide} ')
               ic-wasm "$canister.wasm" -o "$canister.wasm" metadata dfx -d "$metadata_json" -v public
           fi