Replaced ambientimpact_base Gin core Navigation dark mode with patch:

See https://www.drupal.org/project/gin/issues/3488177

- Upgrading drupal/ambientimpact_base (7.x-dev 3a1232b => 7.x-dev 1b63b19)

composer.json

@@ -309,6 +309,9 @@
         "Slow admin/config page load [#3336621]: https://www.drupal.org/project/drupal/issues/3336621#comment-14888211": "patches/drupal/core/3336621-3-remove-admin-config-status-report-check.patch",
         "Drupal.displace() only checks inline display: none; instead of computed styles, leading to incorrect visibility check [#3487907]: https://www.drupal.org/project/drupal/issues/3487907": "patches/drupal/core/3487907-drupal-displace-computed-style.patch"
       },
+      "drupal/gin": {
+        "New core navigation's top bar in dark mode on small screens has white background with light grey text [#3488177]: https://www.drupal.org/project/gin/issues/3488177": "patches/drupal/gin/3488177-core-navigation-dark-mode-top-bar.patch"
+      },
       "drupal/image_style_warmer": {
         "Support webp images [#3319397]: https://www.drupal.org/project/image_style_warmer/issues/3319397#comment-14802527": "patches/drupal/image_style_warmer/webp-module-support-3319397-5.patch"
       },

patches/drupal/gin/3488177-core-navigation-dark-mode-top-bar.patch

@@ -0,0 +1,51 @@
+diff --git a/dist/css/layout/core_navigation.css b/dist/css/layout/core_navigation.css
+index 1fa8c48e..6e32aca6 100644
+--- a/dist/css/layout/core_navigation.css
++++ b/dist/css/layout/core_navigation.css
+@@ -38,7 +38,7 @@ body.gin--core-navigation {
+   }
+ }
+
+-.admin-toolbar {
++[data-drupal-admin-styles] {
+   --admin-toolbar-font-family: var(--gin-font);
+   --admin-toolbar-color-white: var(--gin-bg-layer);
+   --admin-toolbar-color-gray-050: var(--gin-bg-layer2);
+@@ -54,6 +54,10 @@ body.gin--core-navigation {
+   inset-block-start: 0;
+ }
+
++.gin--core-navigation .admin-toolbar-control-bar {
++  background-color: var(--admin-toolbar-color-white);
++}
++
+ .gin--core-navigation .gin-secondary-toolbar:not(.gin-secondary-toolbar--frontend) {
+   margin-block-end: var(--gin-spacing-xxs);
+ }
+diff --git a/styles/layout/core_navigation.scss b/styles/layout/core_navigation.scss
+index 09c88872..6099edc5 100644
+--- a/styles/layout/core_navigation.scss
++++ b/styles/layout/core_navigation.scss
+@@ -40,7 +40,8 @@ body.gin--core-navigation {
+   }
+ }
+
+-.admin-toolbar {
++// This applies to both the sidebar and the control bar on small screens.
++[data-drupal-admin-styles] {
+   --admin-toolbar-font-family: var(--gin-font);
+   --admin-toolbar-color-white: var(--gin-bg-layer);
+   --admin-toolbar-color-gray-050: var(--gin-bg-layer2);
+@@ -60,6 +61,12 @@ body.gin--core-navigation {
+   inset-block-start: 0;
+ }
+
++// Core currently hard codes this as 'white' rather than a custom property, so
++// we need to fix that to correctly apply dark colours.
++.gin--core-navigation .admin-toolbar-control-bar {
++  background-color: var(--admin-toolbar-color-white);
++}
++
+ .gin--core-navigation .gin-secondary-toolbar:not(.gin-secondary-toolbar--frontend) {
+   margin-block-end: var(--gin-spacing-xxs);
+ }