Release prep v2.12.0: drop clean.sh from archives, README links to v2.12.0

clean.sh was deleted from the repo but still listed in archives.files, so
goreleaser failed at the archive stage (globbing failed for pattern clean.sh).

Author: githubflyideas

.goreleaser.yaml

@@ -22,14 +22,13 @@ builds:
     goos: [linux, darwin]
     goarch: [amd64, arm64]
 
-# Tarballs for the "scp and run" crowd — unchanged experience, plus LICENSE and clean.sh.
+# Tarballs for the "scp and run" crowd: the binary plus LICENSE.
 archives:
   - id: tar
     formats: [tar.gz]
     name_template: "{{ .ProjectName }}-v{{ .Version }}-{{ .Os }}-{{ .Arch }}"
     files:
       - LICENSE
-      - clean.sh
 
 checksum:
   name_template: "SHA256SUMS"

README.md

@@ -13,8 +13,8 @@ Just scp and run
 ```bash
 #install
 mkdir -p /home/pingping && cd /home/pingping
-wget https://github.com/githubflyideas/pingping/releases/download/v2.11.2/pingping-v2.11.2-linux-amd64.tar.gz
-tar -zxvf pingping-v2.11.2-linux-amd64.tar.gz
+wget https://github.com/githubflyideas/pingping/releases/download/v2.12.0/pingping-v2.12.0-linux-amd64.tar.gz
+tar -zxvf pingping-v2.12.0-linux-amd64.tar.gz
 
 #run
 ./pingping user=admin passwd=admin