Update Nu version to v0.95 and setup-nu for workflows (nushell#13265)

Update Nu version to v0.95 and setup-nu to v3.12 for workflows
The change has been tested here:
https://github.com/nushell/nightly/actions/runs/9722586476

.github/workflows/nightly-build.yml

@@ -36,10 +36,10 @@ jobs:
           token: ${{ secrets.WORKFLOW_TOKEN }}
 
       - name: Setup Nushell
-        uses: hustcer/setup-nu@v3.11
+        uses: hustcer/setup-nu@v3.12
         if: github.repository == 'nushell/nightly'
         with:
-          version: 0.93.0
+          version: 0.95.0
 
       # Synchronize the main branch of nightly repo with the main branch of Nushell official repo
       - name: Prepare for Nightly Release
@@ -128,9 +128,9 @@ jobs:
         rustflags: ''
 
     - name: Setup Nushell
-      uses: hustcer/setup-nu@v3.11
+      uses: hustcer/setup-nu@v3.12
       with:
-        version: 0.93.0
+        version: 0.95.0
 
     - name: Release Nu Binary
       id: nu
@@ -186,9 +186,9 @@ jobs:
           ref: main
 
       - name: Setup Nushell
-        uses: hustcer/setup-nu@v3.11
+        uses: hustcer/setup-nu@v3.12
         with:
-          version: 0.93.0
+          version: 0.95.0
 
       # Keep the last a few releases
       - name: Delete Older Releases

.github/workflows/release.yml

@@ -76,9 +76,9 @@ jobs:
         rustflags: ''
 
     - name: Setup Nushell
-      uses: hustcer/setup-nu@v3.11
+      uses: hustcer/setup-nu@v3.12
       with:
-        version: 0.93.0
+        version: 0.95.0
 
     - name: Release Nu Binary
       id: nu