feat: set publication icon + bump build submodule (#109)

Bump build to the version that supports a publication icon, and point
STANDARD_SITE_ICON at the deployed standard-site-icon.png so the standard.site
publication record gets a profile image.

- build: 775a3d1 -> 9993e89 (adds publication icon support)
- build-article-data.yml: add STANDARD_SITE_ICON

Author: fmalcher

.github/workflows/build-article-data.yml

@@ -35,6 +35,7 @@ jobs:
           STANDARD_SITE_NAME: Angular-Buch
           STANDARD_SITE_DESCRIPTION: Der Blog zum Angular-Buch – das deutschsprachige Praxisbuch zu Angular.
           STANDARD_SITE_EXPECTED_DID: did:plc:emeppmrqgb5rixbjcjihzd35
+          STANDARD_SITE_ICON: https://angular-buch.com/standard-site-icon.png
         run: |
           cd build
           npm install