Remove public preview label from Ubuntu 26 runners (#63241)

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

Author: lkfortuna

data/reusables/actions/supported-github-runners.md

@@ -25,7 +25,7 @@ For public repositories, jobs using the workflow labels shown in the table below
         <code><a href="https://github.com/actions/runner-images/blob/main/images/ubuntu/Ubuntu2404-Readme.md">ubuntu-latest</a></code>,
         <code><a href="https://github.com/actions/runner-images/blob/main/images/ubuntu/Ubuntu2404-Readme.md">ubuntu-24.04</a></code>,
         <code><a href="https://github.com/actions/runner-images/blob/main/images/ubuntu/Ubuntu2204-Readme.md">ubuntu-22.04</a></code>,
-        <code><a href="https://github.com/actions/runner-images/blob/main/images/ubuntu/Ubuntu2604-Readme.md">ubuntu-26.04</a></code> ({% data variables.release-phases.public_preview_caps %})
+        <code><a href="https://github.com/actions/runner-images/blob/main/images/ubuntu/Ubuntu2604-Readme.md">ubuntu-26.04</a></code>
       </td>
     </tr>
     <tr>
@@ -50,7 +50,7 @@ For public repositories, jobs using the workflow labels shown in the table below
       <td>
         <code><a href="https://github.com/actions/runner-images/blob/main/images/ubuntu/Ubuntu2404-Arm64-Readme.md">ubuntu-24.04-arm</a></code>,
         <code><a href="https://github.com/actions/runner-images/blob/main/images/ubuntu/Ubuntu2204-Arm64-Readme.md">ubuntu-22.04-arm</a></code>,
-        <code><a href="https://github.com/actions/runner-images/blob/main/images/ubuntu/Ubuntu2604-Arm64-Readme.md">ubuntu-26.04-arm</a></code> ({% data variables.release-phases.public_preview_caps %})
+        <code><a href="https://github.com/actions/runner-images/blob/main/images/ubuntu/Ubuntu2604-Arm64-Readme.md">ubuntu-26.04-arm</a></code>
       </td>
     </tr>
     <tr>
@@ -120,7 +120,7 @@ For {% ifversion ghec %}internal and{% endif %} private repositories, jobs using
         <code><a href="https://github.com/actions/runner-images/blob/main/images/ubuntu/Ubuntu2404-Readme.md">ubuntu-latest</a></code>,
         <code><a href="https://github.com/actions/runner-images/blob/main/images/ubuntu/Ubuntu2404-Readme.md">ubuntu-24.04</a></code>,
         <code><a href="https://github.com/actions/runner-images/blob/main/images/ubuntu/Ubuntu2204-Readme.md">ubuntu-22.04</a></code>,
-        <code><a href="https://github.com/actions/runner-images/blob/main/images/ubuntu/Ubuntu2604-Readme.md">ubuntu-26.04</a></code> ({% data variables.release-phases.public_preview_caps %})
+        <code><a href="https://github.com/actions/runner-images/blob/main/images/ubuntu/Ubuntu2604-Readme.md">ubuntu-26.04</a></code>
       </td>
     </tr>
     <tr>
@@ -144,7 +144,7 @@ For {% ifversion ghec %}internal and{% endif %} private repositories, jobs using
       <td>
         <code><a href="https://github.com/actions/runner-images/blob/main/images/ubuntu/Ubuntu2404-Arm64-Readme.md">ubuntu-24.04-arm</a></code>,
         <code><a href="https://github.com/actions/runner-images/blob/main/images/ubuntu/Ubuntu2204-Arm64-Readme.md">ubuntu-22.04-arm</a></code>,
-        <code><a href="https://github.com/actions/runner-images/blob/main/images/ubuntu/Ubuntu2604-Arm64-Readme.md">ubuntu-26.04-arm</a></code> ({% data variables.release-phases.public_preview_caps %})
+        <code><a href="https://github.com/actions/runner-images/blob/main/images/ubuntu/Ubuntu2604-Arm64-Readme.md">ubuntu-26.04-arm</a></code>
       </td>
     </tr>
     <tr>