[202305]add branch info for gitmodules (#15213)

Why I did it
To add branch info for submodules of 202305 branch

Work item tracking
Microsoft ADO (21450860):
How I did it
To modify the .gitmodule file to have 202305 branch for repos

How to verify it
Pass PR build

.gitmodules

@@ -1,15 +1,19 @@
 [submodule "sonic-swss-common"]
 	path = src/sonic-swss-common
 	url = https://github.com/sonic-net/sonic-swss-common
+	branch = 202305
 [submodule "sonic-linux-kernel"]
 	path = src/sonic-linux-kernel
 	url = https://github.com/sonic-net/sonic-linux-kernel
+	branch = 202305
 [submodule "sonic-sairedis"]
 	path = src/sonic-sairedis
 	url = https://github.com/sonic-net/sonic-sairedis
+	branch = 202305
 [submodule "sonic-swss"]
 	path = src/sonic-swss
 	url = https://github.com/sonic-net/sonic-swss
+	branch = 202305
 [submodule "src/p4c-bm/p4c-bm"]
 	path = platform/p4/p4c-bm/p4c-bm
 	url = https://github.com/krambn/p4c-bm
@@ -31,15 +35,18 @@
 [submodule "src/sonic-utilities"]
 	path = src/sonic-utilities
 	url = https://github.com/sonic-net/sonic-utilities
+	branch = 202305
 [submodule "platform/broadcom/sonic-platform-modules-arista"]
 	path = platform/broadcom/sonic-platform-modules-arista
 	url = https://github.com/aristanetworks/sonic
 [submodule "src/sonic-platform-common"]
 	path = src/sonic-platform-common
 	url = https://github.com/sonic-net/sonic-platform-common
+	branch = 202305
 [submodule "src/sonic-platform-daemons"]
 	path = src/sonic-platform-daemons
 	url = https://github.com/sonic-net/sonic-platform-daemons
+	branch = 202305
 [submodule "src/sonic-platform-pde"]
 	path = src/sonic-platform-pde
 	url = https://github.com/sonic-net/sonic-platform-pdk-pde
@@ -94,6 +101,7 @@
 [submodule "src/linkmgrd"]
 	path = src/linkmgrd
 	url = https://github.com/sonic-net/sonic-linkmgrd.git
+	branch = 202305
 [submodule "src/sonic-p4rt/sonic-pins"]
 	path = src/sonic-p4rt/sonic-pins
 	url = https://github.com/sonic-net/sonic-pins.git
@@ -106,9 +114,11 @@
 [submodule "src/sonic-host-services"]
 	path = src/sonic-host-services
 	url = https://github.com/sonic-net/sonic-host-services
+	branch = 202305
 [submodule "src/sonic-gnmi"]
 	path = src/sonic-gnmi
 	url = https://github.com/sonic-net/sonic-gnmi.git
+	branch = 202305
 [submodule "src/sonic-genl-packet"]
 	path = src/sonic-genl-packet
 	url = https://github.com/sonic-net/sonic-genl-packet