fix: Seperate workflows into seperate jobs

Author: if-loop69420

.github/workflows/build_test.yaml

@@ -8,7 +8,7 @@ env:
   CARGO_TERM_COLOR: always
 
 jobs:
-  build_and_test:
+  cache:
     name: etcd_fdw Build and Test
     runs-on: ubuntu-latest
     steps:
@@ -31,15 +31,20 @@ jobs:
           path: |
             ~/.pgrx/
           key: pgrx-0.16.0
-
-      - name: Install latest stable toolchain
+    
+  install_toolchain:
+        name: Install latest stable toolchain
         uses: actions-rs/toolchain@v1
         with:
           toolchain: stable
           override: true
           components: rustfmt, clippy
+  install_dependencies:
       - run: sudo apt install build-essential bison flex clang protobuf-compiler libreadline8 libreadline-dev -y
-      - run: cargo install cargo-pgrx --version 0.16.0 --locked
+  install_cargo_pgrx:
+      continue-on-error: true
+      run: cargo install cargo-pgrx --version 0.16.0 --locked
+  build_and_test:
       - run: cargo pgrx init
       - run: cargo build --verbose
       - run: cargo test --verbose