chore(msr): Update G4 fingerprint for ID_AA64MMFR1 register

A recent kernel backport now sets ECBHB bits in the ID_AA64MMFR1
register.

Update baseline for Graviton 4 on 6.1 host kernel.

Signed-off-by: Jack Thomson <[email protected]>

Author: JackThomson2

tests/data/cpu_template_helper/fingerprint_ARM_NEOVERSE_V2_6.1host.json

@@ -1,6 +1,6 @@
 {
-  "firecracker_version": "1.13.0-dev",
-  "kernel_version": "6.1.140-154.222.amzn2023.aarch64",
+  "firecracker_version": "1.14.0-dev",
+  "kernel_version": "6.1.150-174.273.amzn2023.aarch64",
   "microcode_version": "0x0000000000000017",
   "bios_version": "1.0",
   "bios_revision": "1.0",
@@ -670,7 +670,7 @@
       },
       {
         "addr": "0x603000000013c039",
-        "bitmap": "0b00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010000001100010010000100100010"
+        "bitmap": "0b00000000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000010000001100010010000100100010"
       },
       {
         "addr": "0x603000000013c03a",