Tweaks for flaky tests

Author: paulb777

.github/workflows/database.yml

@@ -42,7 +42,7 @@ jobs:
   integration:
     # Don't run on private repo unless it is a PR.
     if: (github.repository == 'Firebase/firebase-ios-sdk' && github.event_name == 'schedule') || github.event_name == 'pull_request'
-    runs-on: macos-14
+    runs-on: macos-15
     steps:
     - uses: actions/checkout@v4
     - uses: mikehardy/buildcache-action@c87cea0ccd718971d6cc39e672c4f26815b6c126

.github/workflows/remoteconfig.yml

@@ -132,7 +132,7 @@ jobs:
             target: macOS
           - os: macos-15
             xcode: Xcode_16
-            target: watchOS
+            target: watchOS --skip-tests
           - os: macos-15
             xcode: Xcode_16
             target: catalyst

.github/workflows/storage.yml

@@ -24,8 +24,8 @@ jobs:
       matrix:
         language: [Swift, ObjC]
         include:
-          - os: macos-14
-            xcode: Xcode_15.4
+          - os: macos-15
+            xcode: Xcode_16
     env:
       plist_secret: ${{ secrets.GHASecretsGPGPassphrase1 }}
     runs-on: ${{ matrix.os }}