ci(forgejo): use demisto/matplotlib:1.0.0.64685 and robust git install

.forgejo/workflows/generate-banlist-graph.yml

@@ -16,15 +16,30 @@ jobs:
     # Match your Forgejo runner label
     runs-on: docker
     # Use a prebuilt image with matplotlib preinstalled (cached on runner)
-    container: demisto/matplotlib:latest
+    container: demisto/matplotlib:1.0.0.64685
     steps:
       - name: Ensure git is available (minimal)
         run: |
           set -euo pipefail
-          if ! command -v git >/dev/null 2>&1; then
+          if command -v git >/dev/null 2>&1; then
+            exit 0
+          fi
+          echo "git not found; attempting install..."
+          if command -v apt-get >/dev/null 2>&1; then
             apt-get update
-            DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
-              git ca-certificates
+            DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends git ca-certificates
+          elif command -v apk >/dev/null 2>&1; then
+            apk add --no-cache git ca-certificates
+            update-ca-certificates || true
+          elif command -v microdnf >/dev/null 2>&1; then
+            microdnf install -y git ca-certificates || microdnf install -y git
+          elif command -v dnf >/dev/null 2>&1; then
+            dnf -y install git ca-certificates || dnf -y install git
+          elif command -v yum >/dev/null 2>&1; then
+            yum -y install git ca-certificates || yum -y install git
+          else
+            echo "No supported package manager found to install git" >&2
+            exit 1
           fi
 
       - name: Checkout repository (warm or clone)