fix: migrate playwright-go to mxschmitt module path after deprecation

[faisalaffan]

Problem

github.com/playwright-community/playwright-go is deprecated and has moved to github.com/mxschmitt/playwright-go.

Additionally, Microsoft CDN has removed all Playwright driver binaries for versions 1.47 through 1.60. Running d2 init-playwright fails with:

$ d2 init-playwright
D2 needs to install Chromium v130.0.6723.19 to render non-SVG images. Continue? (y/N): y
err: failed to install Playwright: could not install driver: could not install driver:
error: got non 200 status code: 404 (404 Not Found) from
https://playwright.azureedge.net/builds/driver/playwright-1.52.0-mac-arm64.zip
error: got non 200 status code: 404 (404 Not Found) from
https://playwright-akamai.azureedge.net/builds/driver/playwright-1.52.0-mac-arm64.zip
error: got non 200 status code: 404 (404 Not Found) from
https://playwright-verizon.azureedge.net/builds/driver/playwright-1.52.0-mac-arm64.zip

Same result for drivers 1.47, 1.57, and 1.60 — all removed from CDN.

Root Cause

D2's go.mod pinned playwright-community/playwright-go v0.5200.0 which bundles driver 1.52.0. The playwright-community org is deprecated; the project now lives at mxschmitt/playwright-go. Older driver binaries have been purged from Microsoft's CDN mirrors (Azure, Akamai, Verizon).

Fix

• Migrate import path: playwright-community/playwright-go → mxschmitt/playwright-go
• Bump version: v0.5200.0 → v0.6100.0 (bundles driver 1.61.0 — still available on CDN)
• Fix on fix: migrate playwright-go to mxschmitt module path after deprecation #2782

Files Changed

┌──────────────────┬───────────────────────────────────────┐
│       File       │                Change                 │
├──────────────────┼───────────────────────────────────────┤
│ go.mod           │ Replace dependency + transitive bumps │
├──────────────────┼───────────────────────────────────────┤
│ go.sum           │ Updated checksums                     │
├──────────────────┼───────────────────────────────────────┤
│ d2cli/main.go    │ Import path                           │
├──────────────────┼───────────────────────────────────────┤
│ lib/png/png.go   │ Import path                           │
├──────────────────┼───────────────────────────────────────┤
│ lib/xgif/xgif.go │ Import path                           │
└──────────────────┴───────────────────────────────────────┘

Test Plan

• d2 init-playwright installs Chromium successfully
• d2 input.d2 output.png renders PNG
• d2 input.d2 output.gif renders animated GIF

Related

Closes #2776