fix: install nfpm straight from GitHub

install.goreleaser.com appears to no longer be available.

Author: code-asher

.github/workflows/ci.yaml

@@ -265,8 +265,9 @@ jobs:
 
       - name: Install nfpm and envsubst
         run: |
-          curl -sfL https://install.goreleaser.com/github.com/goreleaser/nfpm.sh | sh -s -- -b ~/.local/bin v2.3.1
-          curl -L https://github.com/a8m/envsubst/releases/download/v1.1.0/envsubst-`uname -s`-`uname -m` -o envsubst
+          mkdir -p ~/.local/bin
+          curl -sSL https://github.com/goreleaser/nfpm/releases/download/v2.3.1/nfpm_2.3.1_`uname -s`_`uname -m`.tar.gz | tar -C ~/.local/bin -zxv nfpm
+          curl -sSL https://github.com/a8m/envsubst/releases/download/v1.1.0/envsubst-`uname -s`-`uname -m` -o envsubst
           chmod +x envsubst
           mv envsubst ~/.local/bin
           echo "$HOME/.local/bin" >> $GITHUB_PATH