Bump softprops/action-gh-release to v2.6.2; add permissions

Signed-off-by: Tamal Saha <tamal@appscode.com>

Author: tamalsaha

.github/workflows/release.yml

@@ -9,6 +9,8 @@ jobs:
   build:
     name: Build
     runs-on: ubuntu-24.04
+    permissions:
+      contents: write
     steps:
       - name: Check out code into the Go module directory
         uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1