ci: Update pr.yaml

- remove caching
- add workflow_dispatch
- Add spacing

Signed-off-by: Chris Privitere <[email protected]>

Author: cprivitere

.github/workflows/pr.yaml

@@ -1,6 +1,9 @@
 name: Pull Request Validation
 on:
+  pull_request:
+    types: [opened, synchronize, reopened]
   workflow_dispatch:
+
 jobs:
   validate:
     name: "Validate ${{ matrix.target }}"
@@ -9,28 +12,17 @@ jobs:
       fail-fast: false
       matrix:
         target: ["verify", "lint", "test"]
+
     steps:
+
     - name: checkout
       uses: actions/checkout@v3
       with:
         fetch-depth: 0
+
     - uses: actions/setup-go@v4
       with: 
         go-version-file: './go.mod'
-    - uses: actions/cache@v3
-      with:
-        path: hack/tools/bin
-        key: ${{ runner.os }}-tools-bin-${{ matrix.target }}-${{ hashFiles('Makefile') }}
-        restore-keys: |
-          ${{ runner.os }}-tools-bin-${{ matrix.target }}-
-          ${{ runner.os }}-tools-bin-
-    - uses: actions/cache@v3
-      if: ${{ matrix.target == 'test' }}
-      with:
-        path: /tmp/kubebuilder-tools-*.tar.gz
-        key: ${{ runner.os }}-tmp-${{ matrix.target }}-${{ hashFiles('scripts/fetch_ext_bins.sh') }}
-        restore-keys: |
-          ${{ runner.os }}-tmp-${{ matrix.target }}-
-          ${{ runner.os }}-tmp-
+
     - name: ${{ matrix.target }}
-      run: make ${{ matrix.target }}
+      run: make ${{ matrix.target }}