CI: create versioned directory name of extracted tarball (#4659)

Extracting the tarball will with this create a containing directory named
'grass-x.y.z', where x, y, z stands for major, minor, micro/patch version.

.github/workflows/create_release_draft.yml

@@ -63,7 +63,8 @@ jobs:
         run: |
           cd ..
           tar -cvf ${{ env.OUT_DIR }}/${{ env.GRASS }}.tar \
-            --exclude=".gi*" --exclude=".tr*" grass
+            --exclude=".gi*" --exclude=".tr*" \
+            --transform s/grass/${{ env.GRASS }}/ grass
           cd ${{ env.OUT_DIR }}
           gzip -9k ${{ env.GRASS }}.tar
           md5sum ${{ env.GRASS }}.tar.gz > ${{ env.GRASS }}.tar.gz.md5