chore: optimize and cleanup CI workflows

.github/workflows/auto-assign.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check for assign request
-        uses: actions/github-script@v6
+        uses: actions/github-script@v7
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           script: |

.github/workflows/auto-merge-pr.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Enable auto-merge
-        uses: actions/github-script@v6
+        uses: actions/github-script@v7
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           script: |

.github/workflows/backend-ci.yml

@@ -11,7 +11,7 @@ env:
 
 jobs:
 
-  pre-commit:
+  lint:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
@@ -27,30 +27,18 @@ jobs:
           python-version: '3.x'
 
       - name: Cache pre-commit hooks
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ~/.cache/pre-commit
           key: ${{ runner.os }}-pre-commit-${{ hashFiles('.pre-commit-config.yaml') }}
 
+      - name: Cache rust dependencies
+        uses: Swatinem/rust-cache@v2
+
       - name: Run pre-commit hook suite
         run: |
           python -m pip install pre-commit
           pre-commit run --all-files
-  lint-check-type:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: Install stable toolchain
-        uses: dtolnay/rust-toolchain@stable
-        with:
-          components: clippy, rustfmt
-
-      - name: Cache cargo registry
-        uses: actions/cache@v3
-        with:
-          path: ~/.cargo/registry
-          key: ${{ runner.os }}-cargo-registry-${{ hashFiles('Cargo.lock') }}
 
       - name: Rustfmt check
         run: cargo fmt --all -- --check
@@ -81,11 +69,8 @@ jobs:
       - name: Install stable toolchain
         uses: dtolnay/rust-toolchain@stable
 
-      - name: Cache cargo build
-        uses: actions/cache@v3
-        with:
-          path: target
-          key: ${{ runner.os }}-cargo-build-${{ hashFiles('Cargo.lock') }}
+      - name: Cache rust dependencies
+        uses: Swatinem/rust-cache@v2
 
       - name: Run database migrations
         run: |

.github/workflows/dependency-security.yml

@@ -41,11 +41,10 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-dependency-security-
 
-      - name: Install cargo-audit
-        run: cargo install cargo-audit --locked
-
-      - name: Install cargo-deny
-        run: cargo install cargo-deny --locked
+      - name: Install cargo-audit and cargo-deny
+        uses: taiki-e/install-action@v2
+        with:
+          tool: cargo-audit,cargo-deny
 
       - name: Scan for RustSec advisories
         run: cargo audit --deny warnings