Update mirror-snapshot.yml

add setting ft variable.
change input types from text to string, even though completion suggests text, it gives warnings later in the file that go away if it's string

Author: jeremyd2019

.github/workflows/mirror-snapshot.yml

@@ -3,16 +3,16 @@ on:
   workflow_dispatch:
     inputs:
       snapshotrelease:
-        type: text
+        type: string
         required: true
       reponame:
-        type: text
+        type: string
         required: true
       newrelease:
-        type: text
+        type: string
         required: true
       msysarch:
-        type: text
+        type: string
         required: false
 jobs:
   mirror:
@@ -55,6 +55,7 @@ jobs:
               mv "$a" "${a//\~/.}"
           done
           mkdir tmp
+          ft="$(file "${REPONAME}.db")"
           bsdtar -C tmp -xf "${NEWRELEASE}/${REPONAME}.db"
           pushd tmp
           find . -type f -name desc -exec sed -i -e '/^%FILENAME%$/,+1y/~/./' '{}' +