Use var for base url

defaults/main.yml

@@ -1,2 +1,3 @@
 ---
-gopass_download_base_url: "https://github.com/gopasspw/gopass/releases/download"
+gopass_base_url: "https://github.com/gopasspw/gopass"
+gopass_download_base_url: "{{ gopass_base_url }}/releases/download"

tasks/main.yml

@@ -27,7 +27,7 @@
       - gopass.stat.exists
 
   - name: Check online version
-    shell: set -o pipefail && curl -s https://github.com/gopasspw/gopass/releases/latest | sed 's|.*tag/v\(.*\)".*|\1|'
+    shell: set -o pipefail && curl -s {{ gopass_base_url }}/releases/latest | sed 's|.*tag/v\(.*\)".*|\1|'
     register: gopass_ver
     changed_when: false
     check_mode: no