Update dependency node to v18.20.8 (#12596)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

.github/workflows/build-macos-m1.yml

@@ -13,7 +13,7 @@ jobs:
         with:
           # We need to pin the version to 18.15, because 18.16+ fails with this error:
           # https://github.com/facebook/react-native/issues/36440
-          node-version: '18.20.7'
+          node-version: '18.20.8'
           cache: 'yarn'
 
       - name: Install Yarn

.github/workflows/shared/setup-build-environment/action.yml

@@ -53,7 +53,7 @@ runs:
 
     - uses: actions/setup-node@v4
       with:
-        node-version: '18.20.7'
+        node-version: '18.20.8'
         # Disable the cache on ARM runners. For now, we don't run "yarn install" on these
         # environments and this breaks actions/setup-node.
         # See https://github.com/laurent22/joplin/commit/47d0d3eb9e89153a609fb5441344da10904c6308#commitcomment-159577783.