github CI: use ilammy/msvc-dev-cmd

Small simplification

Signed-off-by: Rosen Penev <rosenp@gmail.com>

.github/workflows/on_PR_windows_matrix.yml

@@ -33,20 +33,10 @@ jobs:
       - uses: actions/checkout@v3
 
       - name: Set up Visual Studio shell
-        uses: egor-tensin/vs-shell@v2
+        uses: ilammy/msvc-dev-cmd@v1
         with:
           arch: ${{matrix.platform}}
 
-      - name: Set up Ninja
-        uses: ashutoshvarma/setup-ninja@master
-        with:
-          version: 1.10.0
-
-      - name: Set up Python
-        uses: actions/setup-python@v4
-        with:
-          python-version: 3.7
-
       - name: Restore Conan cache
         uses: actions/cache@v3
         with:

.github/workflows/on_push_BasicWinLinMac.yml

@@ -22,21 +22,11 @@ jobs:
     steps:
       - uses: actions/checkout@v3
 
-      - name: Setup Ninja
-        uses: ashutoshvarma/setup-ninja@master
-        with:
-          version: 1.10.0
-
       - name: Set up Visual Studio shell
-        uses: egor-tensin/vs-shell@v2
+        uses: ilammy/msvc-dev-cmd@v1
         with:
           arch: x64
 
-      - name: Set up Python
-        uses: actions/setup-python@v4
-        with:
-          python-version: 3.7
-
       - name: Restore conan cache
         uses: actions/cache@v3
         with:

.github/workflows/release.yml

@@ -98,17 +98,7 @@ jobs:
       - uses: actions/checkout@v3
 
       - name: Set up Visual Studio shell
-        uses: egor-tensin/vs-shell@v2
-
-      - name: Setup Ninja
-        uses: ashutoshvarma/setup-ninja@master
-        with:
-          version: 1.10.0
-
-      - name: Set up Python
-        uses: actions/setup-python@v4
-        with:
-          python-version: 3.7
+        uses: ilammy/msvc-dev-cmd@v1
 
       - name: Install doxygen
         run: |