switch to smarter ci cache, which knows intricacies of rust; e.g. auto deletes unused deps

.gitea/workflows/action.yml

@@ -17,17 +17,8 @@ jobs:
     - name: Run Test DB Script
       run: ./test_db.sh
 
-    - name: Set up cargo cache
-      uses: actions/cache@v3
-      with:
-        path: |
-          ~/.cargo/bin/
-          ~/.cargo/registry/index/
-          ~/.cargo/registry/cache/
-          ~/.cargo/git/db/
-          target/
-        key: ${{ runner.os }}-cargo-debug-rowt-${{ hashFiles('**/Cargo.lock') }}
-        restore-keys: ${{ runner.os }}-cargo-debug-rowt-
+    - name: Cache Cargo dependencies
+      uses: Swatinem/rust-cache@v2
 
     - name: Build
       run: |
@@ -56,17 +47,9 @@ jobs:
       - name: Run Test DB Script
         run: ./test_db.sh
 
-      - name: Set up cargo cache
-        uses: actions/cache@v3
-        with:
-          path: |
-            ~/.cargo/bin/
-            ~/.cargo/registry/index/
-            ~/.cargo/registry/cache/
-            ~/.cargo/git/db/
-            target/
-          key: ${{ runner.os }}-cargo-release-rowt-${{ hashFiles('**/Cargo.lock') }}
-          restore-keys: ${{ runner.os }}-cargo-release-rowt-
+      - name: Cache Cargo dependencies
+        uses: Swatinem/rust-cache@v2
+
       - name: Build
         run: |
           cargo build --release --target $CARGO_TARGET
@@ -107,17 +90,8 @@ jobs:
       - name: Run Test DB Script
         run: ./test_db.sh
       
-      - name: Set up cargo cache
-        uses: actions/cache@v3
-        with:
-          path: |
-            ~/.cargo/bin/
-            ~/.cargo/registry/index/
-            ~/.cargo/registry/cache/
-            ~/.cargo/git/db/
-            target/
-          key: ${{ runner.os }}-cargo-release-rowt-${{ hashFiles('**/Cargo.lock') }}
-          restore-keys: ${{ runner.os }}-cargo-release-rowt-
+      - name: Cache Cargo dependencies
+        uses: Swatinem/rust-cache@v2
 
       - name: Build
         run: |