feat: mysql-bkup v2 on bkupkit

MysQL backup and restore built on the shared bkupkit core:
streaming end to end, with no dump held in memory or written to
local disk.

.github/workflows/lint.yml

@@ -6,18 +6,19 @@ on:
 
 jobs:
   lint:
-    name: Run on Ubuntu
+    name: golangci-lint
     runs-on: ubuntu-latest
     steps:
       - name: Clone the code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
 
       - name: Setup Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@v7
         with:
-          go-version: '~1.26'
+          go-version: '1.26'
 
       - name: Run linter
-        uses: golangci/golangci-lint-action@v7
+        uses: golangci/golangci-lint-action@v9
         with:
-          version: v2.9.0
+          version: v2.15.0
+          args: --build-tags integration