ci: Migrate to paths-filter

The technote-space/get-diff-action repo is no longer maintained and
archived. Last commit was 2 years ago.
On the other hand dorny/paths-filter is actively maintained, last commit
was 6 months ago and has far more stars 2100 vs 190 for get-diff-action.
Last but not least paths-filter would better handle push force scenario.

Author: AndreMiras

.github/workflows/build.yml

@@ -7,6 +7,8 @@ on:
       - main
       - release/**
       - upgrade/**
+      # TODO: debugging
+      - feature/paths-filter
 permissions:
   contents: read
 
@@ -21,21 +23,24 @@ jobs:
       matrix:
         go-arch: ["amd64"]
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-go@v3
+      - uses: actions/checkout@v4
+      - uses: actions/setup-go@v5
         with:
           go-version: "^1.21"
-      - uses: technote-space/get-diff-action@v6.1.2
-        id: git_diff
+      - uses: dorny/paths-filter@v3
+        id: filter
         with:
-          PATTERNS: |
-            **/*.go
-            go.mod
-            go.sum
-            **/go.mod
-            **/go.sum
-            **/Makefile
-            Makefile
+          filters: |
+            go:
+              - '**/*.go'
+              - 'go.mod'
+              - 'go.sum'
+              - '**/go.mod'
+              - '**/go.sum'
+              - '**/Makefile'
+              - 'Makefile'
+              - '.github/workflows/build.yml'
+
       - name: Build
-        if: env.GIT_DIFF
-        run: GOARCH=${{ matrix.go-arch }} LEDGER_ENABLED=false make build
+        if: steps.filter.outputs.go == 'true'
+        run: echo TODO debugging GOARCH=${{ matrix.go-arch }} LEDGER_ENABLED=false make build