[main] (deps): Bump dotnet/arcade

Bumps [dotnet/arcade](https://github.com/dotnet/arcade) from 5a11b260f9b0f31b4e7643ad823a4e0f2cdb3ddb to d777c20040bdc2e52b372fa98dcb84141ed692d3.
- [Commits](dotnet/arcade@5a11b26...d777c20)

---
updated-dependencies:
- dependency-name: dotnet/arcade
  dependency-version: d777c20040bdc2e52b372fa98dcb84141ed692d3
  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@5a11b260f9b0f31b4e7643ad823a4e0f2cdb3ddb # 2025-01-13
+    uses: dotnet/arcade/.github/workflows/backport-base.yml@d777c20040bdc2e52b372fa98dcb84141ed692d3 # 2025-01-13
     with:
       pr_description_template: |
         Backport of #%source_pr_number% to %target_branch%

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

@@ -10,4 +10,4 @@ permissions:
 
 jobs:
   Merge:
-    uses: dotnet/arcade/.github/workflows/backport-base.yml@5a11b260f9b0f31b4e7643ad823a4e0f2cdb3ddb # 2024-06-24
+    uses: dotnet/arcade/.github/workflows/backport-base.yml@d777c20040bdc2e52b372fa98dcb84141ed692d3 # 2024-06-24