build: use gitlab.xiph.org instead of git.xiph.org

git.xiph.org doesn't exists anymore

Change-Id: I93a478888319bc1de5aa11713358d20a19e8bd55

contrib/src/speex/SHA512SUMS

-2e2d8ea186d26ca37ff27883772384fd4689cfdee12d91babe46b179507d2c6e5b64bac90adb7359c07f6a6ee2c9eab569d39266bc7ed4de8cf76cc61db87198  speex-9172c7ef85fbf058027528d48ededbc7ca847908.tar.gz
+432470463a86d0b1e6c179224382ffd68043bd86873373a689f70c14f8d2cd5fdf45a5d797202a6d406b1ed572e9b565fbe55d30f6fea110dc23d85ca293575f  speex-9172c7ef85fbf058027528d48ededbc7ca847908.tar.gz

contrib/src/speex/rules.mak

 # speex
 
 SPEEX_HASH := 9172c7ef85fbf058027528d48ededbc7ca847908
-SPEEX_GITURL := https://git.xiph.org/?p=speex.git;a=snapshot;h=$(SPEEX_HASH);sf=tgz
+SPEEX_GITURL := https://gitlab.xiph.org/xiph/speex/-/archive/$(SPEEX_HASH)/speex-$(SPEEX_HASH).tar.gz
 
 PKGS += speex
 ifeq ($(call need_pkg,"speex >= 1.0.5"),)

contrib/src/speexdsp/SHA512SUMS

-a310c7243a858b88e8d69f38af6ee1f23930b237780a62d9ff570dcccced14141403941686e5c76f3e4ce34ea3e3978deab163654cbb2b71ce3fca44da397b6b  speexdsp-SpeexDSP-1.2.0.tar.gz
+18b93ec7fe5e2321c5a887d7fd4d3adf4a69d3d77133ce2287edda283667d5334f85b72c5c1abaca2c700778af29e73455513de19d26a1c5b8eb58248831a789  speexdsp-SpeexDSP-1.2.0.tar.gz

contrib/src/speexdsp/rules.mak

 # speexdsp
 
 SPEEXDSP_HASH := SpeexDSP-1.2.0
-SPEEXDSP_GITURL := https://git.xiph.org/?p=speexdsp.git;a=snapshot;h=$(SPEEXDSP_HASH);sf=tgz
+SPEEXDSP_GITURL := https://gitlab.xiph.org/xiph/speexdsp/-/archive/$(SPEEXDSP_HASH)/speexdsp-$(SPEEXDSP_HASH).tar.gz
 
 PKGS += speexdsp
 ifeq ($(call need_pkg,"speexdsp"),)