Addd donet restore

Author: lahirumaramba

.github/workflows/ci.yml

@@ -24,6 +24,9 @@ jobs:
       with:
         dotnet-version: 2.1.x
 
+    - name: Install dependencies
+      run: dotnet msbuild restore
+
     - name: Build with dotnet
       run: |
         dotnet msbuild FirebaseAdmin/FirebaseAdmin

.github/workflows/nightly.yml

@@ -43,6 +43,9 @@ jobs:
       with:
         dotnet-version: 2.1.x
 
+    - name: Install dependencies
+      run: dotnet msbuild restore
+
     - name: Build with dotnet
       run: dotnet msbuild FirebaseAdmin/FirebaseAdmin
 

.github/workflows/release.yml

@@ -55,6 +55,9 @@ jobs:
       with:
         dotnet-version: 2.1.x
 
+    - name: Install dependencies
+      run: dotnet msbuild restore
+
     - name: Build with dotnet
       run: dotnet msbuild FirebaseAdmin/FirebaseAdmin