[main] (deps): Bump dotnet/arcade

Bumps [dotnet/arcade](https://github.com/dotnet/arcade) from 2ffdd15280699387ec37586e43496152e710d9f8 to 6aa173793e862e03b509406b2a554a2d8bedaf34.
- [Commits](dotnet/arcade@2ffdd15...6aa1737)

---
updated-dependencies:
- dependency-name: dotnet/arcade
  dependency-version: 6aa173793e862e03b509406b2a554a2d8bedaf34
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/backport.yml

@@ -14,7 +14,7 @@ permissions:
 
 jobs:
   backport:
-    uses: dotnet/arcade/.github/workflows/backport-base.yml@2ffdd15280699387ec37586e43496152e710d9f8 # 2025-01-13
+    uses: dotnet/arcade/.github/workflows/backport-base.yml@6aa173793e862e03b509406b2a554a2d8bedaf34 # 2025-01-13
     with:
       pr_description_template: |
         Backport of #%source_pr_number% to %target_branch%

.github/workflows/inter-branch-merge-flow.yml

@@ -11,4 +11,4 @@ permissions:
 
 jobs:
   Merge:
-    uses: dotnet/arcade/.github/workflows/inter-branch-merge-base.yml@2ffdd15280699387ec37586e43496152e710d9f8 # 2024-06-24
+    uses: dotnet/arcade/.github/workflows/inter-branch-merge-base.yml@6aa173793e862e03b509406b2a554a2d8bedaf34 # 2024-06-24