Fix: Add missing changelogs for theme packages (#8490)

Author: mgadewoll

packages/eui-theme-borealis/changelogs/upcoming/8444.md

@@ -0,0 +1,5 @@
+- Added new component tokens:
+  - `buttonGroupBackgroundDisabledSelected`
+  - `overlayMaskBackground`
+  - `overlayMaskBackgroundHighContrast`
+  - `skeletonBackgroundSkeletonMiddleHighContrast`

packages/eui-theme-common/changelogs/upcoming/8444.md

@@ -0,0 +1,13 @@
+- Removed type `EuiShadowCustomColor`
+- Added types: 
+  - `EuiShadowOptions`
+  - `EuiThemeHighContrastModeProp`
+  - `EuiThemeHighContrastMode`
+- Updated shadow utils to accepts a second `options` argument and return borders in high contrast mode:
+  - `euiShadow`
+  - `euiShadowXSmall`
+  - `euiShadowSmall`
+  - `euiShadowMedium`
+  - `euiShadowLarge`
+  - `euiSlightShadowHover`
+  - `euiShadowFlat`

packages/eui/changelogs/upcoming/8490.md

@@ -0,0 +1,3 @@
+**Bug fixes**
+
+- Resolved an internal issue with linked package versions

wiki/eui-team-processes/releasing-versions.md

@@ -24,8 +24,8 @@ git checkout main
 
 If you're already on the `main` branch, make sure you're on the latest state:
 ```sh
-yarn fetch
-yarn pull
+git fetch
+git pull
 ```
 
 Ensure the release-cli is build: