git: Fix nightly release runner running when there's nothing to do

.github/workflows/nightly_release.yml

@@ -12,7 +12,6 @@ jobs:
   nightly-release:
     runs-on: ubuntu-24.04
     name: 🌃 Update Nightly Release
-
     steps:
       - name: 🧰 Checkout
         uses: actions/checkout@v4
@@ -22,13 +21,19 @@ jobs:
           fetch-tags: true
 
       - name: 🌃 Check for new commits
+        id: check_commits
         run: |
+          cd ImHex
+          git config --global --add safe.directory $(pwd)
           if [ -z "$(git log nightly..HEAD --oneline)" ]; then
             echo "No new commits since last nightly. Exiting."
-            exit 0
+            echo "::set-output name=should_run::false"
+          else
+            echo "::set-output name=should_run::true"
           fi
 
       - name: 📜 Set version variable
+        if: ${{ steps.check_commits.outputs.should_run == 'true' }}
         run: |
           project_version=`cat ImHex/VERSION`          
           echo "IMHEX_VERSION=$project_version" >> $GITHUB_ENV
@@ -43,6 +48,7 @@ jobs:
           skip_unpack: true
 
       - name: 🗜️ Unzip files when needed
+        if: ${{ steps.check_commits.outputs.should_run == 'true' }}
         run: |
           set -x
           for zipfile in ./*.zip
@@ -58,6 +64,7 @@ jobs:
           done
 
       - name: 🟩 Rename artifacts when needed
+        if: ${{ steps.check_commits.outputs.should_run == 'true' }}
         run: |
           mv "Windows Portable x86_64.zip" imhex-${{ env.IMHEX_VERSION }}-Windows-Portable-x86_64.zip
           mv "Windows Portable arm64.zip" imhex-${{ env.IMHEX_VERSION }}-Windows-Portable-arm64.zip
@@ -66,6 +73,7 @@ jobs:
           rm artifact.tar || true
 
       - name: 📖 Generate Release Notes
+        if: ${{ steps.check_commits.outputs.should_run == 'true' }}
         id: release_notes
         continue-on-error: true
         run: |
@@ -75,6 +83,7 @@ jobs:
           git log nightly..origin/master --oneline --no-merges --pretty=format:'* %s' >> changelog.md
 
       - name: 📦 Update Pre-Release
+        if: ${{ steps.check_commits.outputs.should_run == 'true' }}
         run: |
           set -e
           
@@ -99,6 +108,7 @@ jobs:
           gh release upload nightly ../*.* --clobber
 
       - name: ⬆️ Publish x86_64 Snap package
+        if: ${{ steps.check_commits.outputs.should_run == 'true' }}
         continue-on-error: true
         uses: snapcore/action-publish@v1
         env:
@@ -108,6 +118,7 @@ jobs:
           release: edge
 
       - name: ⬆️ Publish arm64 Snap package
+        if: ${{ steps.check_commits.outputs.should_run == 'true' }}
         continue-on-error: true
         uses: snapcore/action-publish@v1
         env: