Add LDC 1.34.0 and make it the new default (#5485)

Infra: compiler-explorer/infra#1092

<!-- THIS COMMENT IS INVISIBLE IN THE FINAL PR, BUT FEEL FREE TO REMOVE
IT
Thanks for taking the time to improve CE. We really appreciate it.
Before opening the PR, please make sure that the tests & linter pass
their checks,
  by running `make check`.
In the best case scenario, you are also adding tests to back up your
changes,
  but don't sweat it if you don't. We can discuss them at a later date.
Feel free to append your name to the CONTRIBUTORS.md file
Thanks again, we really appreciate this!
-->

etc/config/d.amazon.properties

@@ -1,5 +1,5 @@
 compilers=&gdc:&ldc:&dmd:&gdccross
-defaultCompiler=ldc1_33
+defaultCompiler=ldc1_34
 
 group.gdc.compilers=gdc48:gdc49:gdc52:gdc92:gdc93:gdc95:gdc101:gdc102:gdc105:gdc111:gdc113:gdc114:gdc121:gdc122:gdc123:gdc131:gdc132:gdctrunk
 group.gdc.groupName=GDC x86-64
@@ -394,7 +394,7 @@ compiler.gdcmipsel1320.semver=13.2.0
 compiler.gdcmipsel1320.objdumper=/opt/compiler-explorer/mipsel/gcc-13.2.0/mipsel-multilib-linux-gnu/bin/mipsel-multilib-linux-gnu-objdump
 compiler.gdcmipsel1320.demangler=/opt/compiler-explorer/mipsel/gcc-13.2.0/mipsel-multilib-linux-gnu/bin/mipsel-multilib-linux-gnu-c++filt
 
-group.ldc.compilers=ldc017:ldc100:ldc110:ldc120:ldc130:ldc140:ldc150:ldc160:ldc170:ldc180:ldc190:ldc1_10:ldc1_11:ldc1_12:ldc1_13:ldc1_14:ldc1_15:ldc1_16:ldc1_17:ldc1_18:ldc1_19:ldc1_20:ldc1_21:ldc1_22:ldc1_23:ldc1_24:ldc1_25:ldc1_26:ldc1_27:ldc1_28:ldc1_29:ldc1_30:ldc1_31:ldc1_32:ldc1_33:ldcbeta:ldclatestci
+group.ldc.compilers=ldc017:ldc100:ldc110:ldc120:ldc130:ldc140:ldc150:ldc160:ldc170:ldc180:ldc190:ldc1_10:ldc1_11:ldc1_12:ldc1_13:ldc1_14:ldc1_15:ldc1_16:ldc1_17:ldc1_18:ldc1_19:ldc1_20:ldc1_21:ldc1_22:ldc1_23:ldc1_24:ldc1_25:ldc1_26:ldc1_27:ldc1_28:ldc1_29:ldc1_30:ldc1_31:ldc1_32:ldc1_33:ldc1_34:ldcbeta:ldclatestci
 group.ldc.compilerType=ldc
 group.ldc.isSemVer=true
 group.ldc.baseName=ldc
@@ -487,6 +487,9 @@ compiler.ldc1_32.options=-gcc=gcc
 compiler.ldc1_33.exe=/opt/compiler-explorer/ldc1.33.0/ldc2-1.33.0-linux-x86_64/bin/ldc2
 compiler.ldc1_33.semver=1.33.0
 compiler.ldc1_33.options=-gcc=gcc
+compiler.ldc1_34.exe=/opt/compiler-explorer/ldc1.34.0/ldc2-1.34.0-linux-x86_64/bin/ldc2
+compiler.ldc1_34.semver=1.34.0
+compiler.ldc1_34.options=-gcc=gcc
 compiler.ldcbeta.exe=/opt/compiler-explorer/ldcbeta/bin/ldc2
 compiler.ldcbeta.semver=beta
 compiler.ldcbeta.options=-gcc=gcc