ci: fix codecov job depedency

Signed-off-by: Massimiliano Giovagnoli <[email protected]>

.github/actions/exists/action.yaml

@@ -0,0 +1,21 @@
+name: Checks if an input is defined
+
+description: Checks if an input is defined and outputs 'true' or 'false'.
+
+inputs:
+  value:
+    description: value to test
+    required: true
+
+outputs:
+  result:
+    description: outputs 'true' or 'false' if input value is defined or not
+    value: ${{ steps.check.outputs.result }}
+
+runs:
+  using: composite
+  steps:
+    - shell: bash
+      id: check
+      run: |
+        echo "result=${{ inputs.value != '' }}" >> $GITHUB_OUTPUT

.github/actions/setup-caches/action.yaml

@@ -0,0 +1,20 @@
+name: Setup caches
+
+description: Setup caches for go modules and build cache.
+
+inputs:
+  build-cache-key:
+    description: build cache prefix
+
+runs:
+  using: composite
+  steps:
+    - uses: actions/cache@4723a57e26efda3a62cbde1812113b730952852d # v3.2.2
+      with:
+        path: ~/go/pkg/mod
+        key: ${{ runner.os }}-go-pkg-mod-${{ hashFiles('**/go.sum') }}-${{ hashFiles('Makefile') }}
+    - uses: actions/cache@4723a57e26efda3a62cbde1812113b730952852d # v3.2.2
+      if: ${{ inputs.build-cache-key }}
+      with:
+        path: ~/.cache/go-build
+        key: ${{ runner.os }}-build-cache-${{ inputs.build-cache-key }}-${{ hashFiles('**/go.sum') }}-${{ hashFiles('Makefile') }}