ci: pin semgrep to old version

current version has problem with PRs originating from fork

.github/workflows/linters.yml

@@ -11,10 +11,10 @@ jobs:
     steps:
       - uses: actions/checkout@v2
 
-      - name: Set up Python 3.8
+      - name: Set up Python 3.10
         uses: actions/setup-python@v2
         with:
-          python-version: 3.8
+          python-version: '3.10'
 
       - name: Install and Run Pre-commit
         uses: pre-commit/action@v2.0.3
@@ -22,10 +22,8 @@ jobs:
       - name: Download Semgrep rules
         run: git clone --depth 1 https://github.com/frappe/semgrep-rules.git frappe-semgrep-rules
 
-      - uses: returntocorp/semgrep-action@v1
-        env:
-            SEMGREP_TIMEOUT: 120
-        with:
-            config: >-
-              r/python.lang.correctness
-              ./frappe-semgrep-rules/rules
+      - name: Download semgrep
+        run: pip install semgrep==0.97.0
+
+      - name: Run Semgrep rules
+        run: semgrep ci --config ./frappe-semgrep-rules/rules --config r/python.lang.correctness