CI: bump nghttp2 from 1.55.0 to 1.55.1

Closes curl#11442

Author: GrahamCampbell

.github/workflows/ngtcp2-gnutls.yml

@@ -120,7 +120,7 @@ jobs:
       name: 'install ngtcp2'
 
     - run: |
-        git clone --quiet --depth=1 -b v1.55.0 https://github.com/nghttp2/nghttp2
+        git clone --quiet --depth=1 -b v1.55.1 https://github.com/nghttp2/nghttp2
         cd nghttp2
         autoreconf -fi
         ./configure --prefix=$HOME/all PKG_CONFIG_PATH="$HOME/all/lib/pkgconfig" --enable-http3

.github/workflows/ngtcp2-quictls.yml

@@ -97,7 +97,7 @@ jobs:
       name: 'install ngtcp2'
 
     - run: |
-        git clone --quiet --depth=1 -b v1.55.0 https://github.com/nghttp2/nghttp2
+        git clone --quiet --depth=1 -b v1.55.1 https://github.com/nghttp2/nghttp2
         cd nghttp2
         autoreconf -fi
         ./configure --prefix=$HOME/all PKG_CONFIG_PATH="$HOME/all/lib/pkgconfig" --enable-http3

.github/workflows/ngtcp2-wolfssl.yml

@@ -108,7 +108,7 @@ jobs:
       name: 'install ngtcp2'
 
     - run: |
-        git clone --quiet --depth=1 -b v1.55.0 https://github.com/nghttp2/nghttp2
+        git clone --quiet --depth=1 -b v1.55.1 https://github.com/nghttp2/nghttp2
         cd nghttp2
         autoreconf -fi
         ./configure --prefix=$HOME/all PKG_CONFIG_PATH="$HOME/all/lib/pkgconfig" --enable-http3