Fix possible build issue with devcontainer for ChibiOS (#2759)

***NO_CI***

Author: networkfusion

.devcontainer/sources/Dockerfile.ChibiOS

@@ -54,7 +54,7 @@ RUN git clone --branch nf-build https://github.com/nanoframework/STM32CubeL4.git
     && git clone --branch nf-build https://github.com/nanoframework/STM32CubeF7.git --depth 1 ./sources/STM32CubeF7 \
     && git clone --branch nf-build https://github.com/nanoframework/STM32CubeF4.git --depth 1 ./sources/STM32CubeF4 \
     && git clone --branch nf-build https://github.com/nanoframework/STM32CubeH7.git --depth 1 ./sources/STM32CubeH7 \    
-    && git svn clone http://svn.code.sf.net/p/chibios/code/branches/stable_21.11.x -rHEAD ./sources/ChibiOs \
+    && git svn clone https://svn.code.sf.net/p/chibios/code/branches/stable_21.11.x -rHEAD ./sources/ChibiOs \
     && git clone --branch nanoframework https://github.com/nanoframework/ChibiOS-Contrib.git --depth 1 ./sources/ChibiOs-Contrib
 # Clone mbedtls and fatfs
 RUN git clone --branch mbedtls-2.28.2 https://github.com/ARMmbed/mbedtls.git --depth 1 ./sources/mbedtls \