ci: pin playwright to 1.61.1 matching runner image

Floating "^1" resolved to 1.61.1 while the e2e container was pinned
to v1.59.0-jammy, so its browser builds were missing at launch. Pin the
dep exact and bump the image so the two versions move together.

yarn.lock

@@ -737,7 +737,7 @@ __metadata:
   resolution: "@ilia/carousel@workspace:."
   dependencies:
     "@biomejs/biome": "npm:^2"
-    "@playwright/test": "npm:^1"
+    "@playwright/test": "npm:1.61.1"
     "@size-limit/preset-small-lib": "npm:^11"
     "@vitest/coverage-v8": "npm:^2"
     jsdom: "npm:^25"
@@ -820,7 +820,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@playwright/test@npm:^1":
+"@playwright/test@npm:1.61.1":
   version: 1.61.1
   resolution: "@playwright/test@npm:1.61.1"
   dependencies: