refactor(CI): switch ci.yml to self-hosted github runners

Author: Akinator31

.github/workflows/ci.yml

@@ -10,7 +10,7 @@ env:
 jobs:
   build_and_test:
     name: Rustmail - latest
-    runs-on: ubuntu-latest
+    runs-on: self-hosted
     env:
       SQLX_OFFLINE: true
     strategy:
@@ -23,12 +23,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Set up Rust
-        run: rustup update ${{ matrix.toolchain }} && rustup default ${{ matrix.toolchain }}
-
-      - name: Install trunk and wasm target
-        run: |
-          rustup target add wasm32-unknown-unknown
-          cargo install trunk --locked
+        run: rustup default ${{ matrix.toolchain }}
 
       - name: Build frontend
         working-directory: rustmail_panel