fixup! release: create initial Windows installer build workflow

No need to initialize the `release` environment for the `prereq` job;
Originally, the expectation was that this would prevent the repeated
need for validating manually that the jobs are allowed to access that
environment; However, GitHub Actions does ask for every single job, and
for certain reasons it is unlikely that this is ever going to be fixed.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

Author: dscho

.github/workflows/build-git-installers.yml

@@ -12,7 +12,6 @@ jobs:
   # Check prerequisites for the workflow
   prereqs:
     runs-on: ubuntu-latest
-    environment: release
     outputs:
       tag_name: ${{ steps.tag.outputs.name }}           # The full name of the tag, e.g. v2.32.0.vfs.0.0
       tag_version: ${{ steps.tag.outputs.version }}     # The version number (without preceding "v"), e.g. 2.32.0.vfs.0.0