ci: stop a hung job after 15 minutes

No job had a time limit. In run 36888691442, apt-get update inside
"npx playwright install --with-deps chromium" stopped after its fifth
index download and printed nothing for 6 hours, until GitHub cancelled
the javascript job at its 360-minute default. The same step on the
same commit took about 3 minutes in the pull_request run.

Give every job a 15-minute limit, as solid-objects-js does. In the last
25 successful runs, the longest job took 491 s, so the limit leaves
room for a slow runner and stops a hang in 15 minutes instead of 6
hours.

Author: cardmagic

.github/workflows/ci.yml

@@ -8,6 +8,7 @@ on:
 jobs:
   sqlite:
     runs-on: ubuntu-latest
+    timeout-minutes: 15
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
       - uses: ruby/setup-ruby@95ef2b042f9d7a56d8268cba8559e2842e2ad01b # v1
@@ -19,6 +20,7 @@ jobs:
 
   javascript:
     runs-on: ubuntu-latest
+    timeout-minutes: 15
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
       - uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4
@@ -31,6 +33,7 @@ jobs:
 
   compatibility:
     runs-on: ubuntu-latest
+    timeout-minutes: 15
     strategy:
       fail-fast: false
       matrix:
@@ -49,6 +52,7 @@ jobs:
 
   redis:
     runs-on: ubuntu-latest
+    timeout-minutes: 15
     services:
       redis:
         image: redis:7
@@ -69,6 +73,7 @@ jobs:
 
   postgresql:
     runs-on: ubuntu-latest
+    timeout-minutes: 15
     services:
       postgres:
         image: postgres:18
@@ -95,6 +100,7 @@ jobs:
 
   mysql:
     runs-on: ubuntu-latest
+    timeout-minutes: 15
     # Both clients speak MySQL but report different adapter names, negotiate
     # different connection collations, and name the same error code
     # differently, so passing on one proves nothing about the other.
@@ -129,6 +135,7 @@ jobs:
 
   static:
     runs-on: ubuntu-latest
+    timeout-minutes: 15
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
       - uses: ruby/setup-ruby@95ef2b042f9d7a56d8268cba8559e2842e2ad01b # v1
@@ -148,6 +155,7 @@ jobs:
       - compatibility
       - redis
     runs-on: ubuntu-latest
+    timeout-minutes: 15
     permissions:
       contents: write
       id-token: write