Implement Docker best practices on efr32 image (#10033)

Some of these best practices are:
* Pin versions
* Avoid additional packages installation
* Clean all missing after apt command

Signed-off-by: Victor Morales <[email protected]>

Author: electrocucaracha

integrations/docker/images/chip-build-efr32/Dockerfile

@@ -1,13 +1,13 @@
 ARG VERSION=latest
 FROM connectedhomeip/chip-build:${VERSION}
 
-
-
-
 # GNU ARM Embedded toolchain, cross compiler for various platform builds
 RUN set -x \
     && apt-get update \
-    && DEBIAN_FRONTEND=noninteractive apt-get install -fy \
-    gcc-arm-none-eabi \
-    binutils-arm-none-eabi \
-    ccache
+    && DEBIAN_FRONTEND=noninteractive apt-get install -fy --no-install-recommends \
+    gcc-arm-none-eabi=15:9-2019-q4-0ubuntu1 \
+    binutils-arm-none-eabi=2.34-4ubuntu1+13ubuntu1 \
+    ccache=3.7.7-1 \
+    && apt-get clean \
+    && rm -rf /var/lib/apt/lists/ \
+    && : # last line