chore(github): remove Poster library checkout and module patching steps

Signed-off-by: Adrián Constante <ad_con.reload@proton.me>

Author: adcondev

.github/workflows/ci.yml

@@ -75,22 +75,12 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v6
 
-      - name: Checkout Poster library
-        uses: actions/checkout@v6
-        with:
-          repository: adcondev/poster
-          path: poster
-
       - name: Setup Go
         uses: actions/setup-go@v6
         with:
           go-version: ${{ env.GO_VERSION }}
           cache: true
 
-      - name: Patch Go modules for CI
-        run: |
-          go mod edit -replace github.com/adcondev/poster=./poster
-
       - name: Run tests with race detection
         run: go test -v -race -coverprofile=coverage.txt -covermode=atomic ./...
 
@@ -126,12 +116,6 @@ jobs:
         with:
           fetch-depth: 0
 
-      - name: Checkout Poster library
-        uses: actions/checkout@v6
-        with:
-          repository: adcondev/poster
-          path: poster
-
       - name: Setup Go
         uses: actions/setup-go@v6
         with:
@@ -141,20 +125,12 @@ jobs:
       - name: Run benchmarks (base)
         continue-on-error: true
         run: |
-          # Ignore our cloned repos so git clean doesn't delete them
-          git clean -fdx -e poster/
-          git reset --hard
           git checkout ${{ github.event.pull_request.base.sha }}
-          # Re-apply the patch because checkout restores the base go.mod
-          go mod edit -replace github.com/adcondev/poster=./poster
           go test -bench=. -benchmem -run=^$ ./... > /tmp/base-benchmark.txt 2>&1 || true
 
       - name: Run benchmarks (current)
         run: |
-          git clean -fdx -e poster/
-          git reset --hard
           git checkout ${{ github.event.pull_request.head.sha }}
-          go mod edit -replace github.com/adcondev/poster=./poster
           go test -bench=. -benchmem -run=^$ ./... > /tmp/current-benchmark.txt 2>&1
 
       - name: Compare benchmarks
@@ -229,22 +205,12 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v6
 
-      - name: Checkout Poster library
-        uses: actions/checkout@v6
-        with:
-          repository: adcondev/poster
-          path: poster
-
       - name: Setup Go
         uses: actions/setup-go@v6
         with:
           go-version: ${{ env.GO_VERSION }}
           cache: true
 
-      - name: Patch Go modules for CI
-        run: |
-          go mod edit -replace github.com/adcondev/poster=./poster
-
       - name: Run golangci-lint
         uses: golangci/golangci-lint-action@v9
         with:
@@ -260,22 +226,12 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v6
 
-      - name: Checkout Poster library
-        uses: actions/checkout@v6
-        with:
-          repository: adcondev/poster
-          path: poster
-
       - name: Setup Go
         uses: actions/setup-go@v6
         with:
           go-version: ${{ env.GO_VERSION }}
           cache: true
 
-      - name: Patch Go modules for CI
-        run: |
-          go mod edit -replace github.com/adcondev/poster=./poster
-
       - name: Install Task
         uses: arduino/setup-task@v2
         with: