Update release GitHub Actions workflow

- Use the fork URL for the tagged importpath
- Use latest Ubuntu and macOS runners

.github/workflows/release.yml

@@ -47,8 +47,8 @@ jobs:
     strategy:
       matrix:
         os:
-          - ubuntu-20.04
-          - macos-11
+          - ubuntu-latest
+          - macos-latest
         arch:
           - amd64
           - arm64
@@ -66,7 +66,7 @@ jobs:
         run: |
           go get -v -t -d ./...
           mkdir bin
-          GOARCH=${arch} go build -v -ldflags "-X github.com/ArmyCyberInstitute/cmgr/cmgr.version=`git describe --tags`" -o bin ./...
+          GOARCH=${arch} go build -v -ldflags "-X github.com/picoCTF/cmgr/cmgr.version=`git describe --tags`" -o bin ./...
           cp LICENSE bin/LICENSE
           cat NOTICE NOTICE.release > bin/NOTICE
           cd bin && tar czvf cmgr.tar.gz cmgr cmgrd LICENSE NOTICE